Pergunta

Which carbonate mineral reacts readily with cool dilute hydrochloric acid (HCl) to produce visible bubbles of carbon dioxide gas? Dolomite Calcite Quartz Plagioclase
Solução

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LuizProfissional · Tutor por 6 anos
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The carbonate mineral that reacts readily with cool dilute hydrochloric acid (HCl) to produce visible bubbles of carbon dioxide gas is **Calcite**.<br /><br />When hydrochloric acid comes into contact with calcite, a reaction occurs that produces calcium chloride, water, and carbon dioxide gas. This reaction is often used as a field test to identify the presence of calcite in rocks and minerals. The reaction can be represented as:<br /><br />\[ \text{CaCO}_3 + 2\text{HCl} \rightarrow \text{CaCl}_2 + \text{H}_2\text{O} + \text{CO}_2 \]<br /><br />This reaction is not as vigorous with dolomite, and quartz and plagioclase are not carbonate minerals, so they do not react with HCl in the same way.
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