12. What happens when 100gm of copper powder is heated in air?write
balanced chemical equation for the reaction that takes place. Why do dry
HCl gas not change the colour of dry litmus paper? Which gas is
evolved when an acid reacts with metal? How will u test the presence of
this gas?
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100gm of copper powder is heated in air?write
balanced chemical equation for the reaction that takes place. Why do dry
HCl gas not change the colour of dry litmus paper?
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