https://wikiciv.org/index.php?action=history&feed=atom&title=Hydrochloric_acid
Hydrochloric acid - Revision history
2026-09-16T05:59:07Z
Revision history for this page on the wiki
MediaWiki 1.45.3
https://wikiciv.org/index.php?title=Hydrochloric_acid&diff=6432&oldid=prev
AmericanCrocodile: changed heading formatting
2026-03-16T01:00:59Z
<p>changed heading formatting</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 01:00, 16 March 2026</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l9">Line 9:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The FeCl2 byproduct can be recycled by hydrochloric acid regeneration process to recover some of the spent HCl.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The FeCl2 byproduct can be recycled by hydrochloric acid regeneration process to recover some of the spent HCl.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>== Hydrogen Gas Production ==</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">=</ins>== Hydrogen Gas Production <ins style="font-weight: bold; text-decoration: none;">=</ins>==</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Hydrochloric acid can produce Hydrogen gas when reacted with metals more reactive than hydrogen. In this reaction the metal reduces the Hydrogen ions in the Hydrochloric Acid. The product of this reaction is Hydrogen gas and a metal chloride salt.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Hydrochloric acid can produce Hydrogen gas when reacted with metals more reactive than hydrogen. In this reaction the metal reduces the Hydrogen ions in the Hydrochloric Acid. The product of this reaction is Hydrogen gas and a metal chloride salt.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>=== Examples of this reaction ===</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">=</ins>=== Examples of this reaction ===<ins style="font-weight: bold; text-decoration: none;">=</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Zinc:<blockquote>Zn<sub>(s)</sub> + 2HCl<sub>(aq)</sub> → ZnCl<sub>2(aq) +</sub> H<sub>2(g)</sub></blockquote>Magnesium:<blockquote>Mg<sub>(s)</sub> + 2HCl<sub>(aq)</sub> → MgCl<sub>2(aq) +</sub> H<sub>2(g)</sub></blockquote>Iron:<blockquote>Fe<sub>(s)</sub> + 2HCl<sub>(aq)</sub> → FeCl<sub>2(aq) +</sub> H<sub>2(g)</sub></blockquote></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Zinc:<blockquote>Zn<sub>(s)</sub> + 2HCl<sub>(aq)</sub> → ZnCl<sub>2(aq) +</sub> H<sub>2(g)</sub></blockquote>Magnesium:<blockquote>Mg<sub>(s)</sub> + 2HCl<sub>(aq)</sub> → MgCl<sub>2(aq) +</sub> H<sub>2(g)</sub></blockquote>Iron:<blockquote>Fe<sub>(s)</sub> + 2HCl<sub>(aq)</sub> → FeCl<sub>2(aq) +</sub> H<sub>2(g)</sub></blockquote></div></td></tr>
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AmericanCrocodile
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AmericanCrocodile: reformatted chemical equations
2026-03-16T00:58:44Z
<p>reformatted chemical equations</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 00:58, 16 March 2026</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=== Pickling of steel ===</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=== Pickling of steel ===</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Hydrochloric acid can be used in the pickling of steel to remove rust. A typical rust removal using HCl goes as follows:<blockquote><del style="font-weight: bold; text-decoration: none;">Fe3O4 </del>+ Fe + <del style="font-weight: bold; text-decoration: none;">8 HCl </del>→ <del style="font-weight: bold; text-decoration: none;">4 FeCl2 </del>+ <del style="font-weight: bold; text-decoration: none;">4 H2O</del></blockquote>This reaction reacts with the iron oxide present on the steel until it is depleted as long as HCl is added in excess.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Hydrochloric acid can be used in the pickling of steel to remove rust. A typical rust removal using HCl goes as follows:<blockquote><ins style="font-weight: bold; text-decoration: none;">Fe<sub>3</sub>O<sub>4</sub> </ins>+ Fe + <ins style="font-weight: bold; text-decoration: none;">8HCl </ins>→ <ins style="font-weight: bold; text-decoration: none;">4FeCl<sub>2</sub> </ins>+ <ins style="font-weight: bold; text-decoration: none;">4H<sub>2</sub>O</ins></blockquote>This reaction reacts with the iron oxide present on the steel until it is depleted as long as HCl is added in excess.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The FeCl2 byproduct can be recycled by hydrochloric acid regeneration process to recover some of the spent HCl.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The FeCl2 byproduct can be recycled by hydrochloric acid regeneration process to recover some of the spent HCl.</div></td></tr>
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AmericanCrocodile
https://wikiciv.org/index.php?title=Hydrochloric_acid&diff=6430&oldid=prev
AmericanCrocodile: Hydrochloric gas production
2026-03-16T00:53:16Z
<p>Hydrochloric gas production</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 00:53, 16 March 2026</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The FeCl2 byproduct can be recycled by hydrochloric acid regeneration process to recover some of the spent HCl.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The FeCl2 byproduct can be recycled by hydrochloric acid regeneration process to recover some of the spent HCl.</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== Hydrogen Gas Production ==</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Hydrochloric acid can produce Hydrogen gas when reacted with metals more reactive than hydrogen. In this reaction the metal reduces the Hydrogen ions in the Hydrochloric Acid. The product of this reaction is Hydrogen gas and a metal chloride salt.</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">=== Examples of this reaction ===</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Zinc:<blockquote>Zn<sub>(s)</sub> + 2HCl<sub>(aq)</sub> → ZnCl<sub>2(aq) +</sub> H<sub>2(g)</sub></blockquote>Magnesium:<blockquote>Mg<sub>(s)</sub> + 2HCl<sub>(aq)</sub> → MgCl<sub>2(aq) +</sub> H<sub>2(g)</sub></blockquote>Iron:<blockquote>Fe<sub>(s)</sub> + 2HCl<sub>(aq)</sub> → FeCl<sub>2(aq) +</sub> H<sub>2(g)</sub></blockquote></ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Safety ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Safety ==</div></td></tr>
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AmericanCrocodile
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Barton222: Created hydrochloric acid page
2025-05-13T21:23:15Z
<p>Created hydrochloric acid page</p>
<p><b>New page</b></p><div>Hydrochloric acid is an aqueous solution of hydrogen chloride (HCl). It is a colorless strong acid and a component of the gastric acid of multiple species including humans. <br />
<br />
== Uses ==<br />
As with many other acids hydrochloric acid is used to catalyze certain organic reactions. HCl is also used for pH neutralization of bases and the [[Pickling]] of steel. Furthermore it has a wide range of processing and cleaning applications.<br />
<br />
=== Pickling of steel ===<br />
Hydrochloric acid can be used in the pickling of steel to remove rust. A typical rust removal using HCl goes as follows:<blockquote>Fe3O4 + Fe + 8 HCl → 4 FeCl2 + 4 H2O</blockquote>This reaction reacts with the iron oxide present on the steel until it is depleted as long as HCl is added in excess.<br />
<br />
The FeCl2 byproduct can be recycled by hydrochloric acid regeneration process to recover some of the spent HCl.<br />
<br />
== Safety ==<br />
Hydrochloric acid releases toxic vapors when in an open container. Hydrochloric acid also causes skin burns, damage to eyes and is corrosive to metals. Concentrated hydrochloric acid is volatile at room temperature. <br />
<br />
When handeling hydrochloric acid the following are essential for safety:<br />
<br />
* Acid resistant gloves<br />
* Safety glasses<br />
* Labcoat (polyester material recommended)<br />
* Acid neutralizer<br />
* A well ventilated area<br />
* Hazardous waste disposal containers<br />
* An emergency shower and eye washing tap<br />
<br />
Avoid inhalation of fumes and avoid contact. In case of contact wash with water.</div>
Barton222