Which metal reacts with dilute hydrochloric acid to produce effervescence?
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Many metals can react with dilute hydrochloric acid (HCl) to produce effervescence (the formation of bubbles or gas). However, one of the most common metals that exhibits this reaction is calcium (Ca). When calcium reacts with dilute hydrochloric acid, it produces calcium chloride (CaCl2), water (H2O), and hydrogen gas (H2). The effervescence is due to the evolution of hydrogen gas during the reaction:
Ca + 2HCl -> CaCl2 + H2
So, calcium (Ca) is an example of a metal that reacts with dilute hydrochloric acid to produce effervescence.