What will happen when potassium and calcium reacts with hcl? Which gas is evolved ?
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Solution
Potassium and calcium reacts with dilute HCl to form KCl and CaCl2.The gas evolved during the reaction is H2.The chemical reaction is shown below:
2K(s) + 2HCl(aq) —> 2KCl(aq) + H2(g)
Ca(s) + 2HCl(aq) —> CaCl2(aq) + H2(g)