Question

3. Hydrogen gas is evolved in a chemical reaction between Zinc and HCl. What will happen if Zinc is
replaced by Copper/Mg in the reaction?
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Answer 1

Answer:

it can't be replaced by copper so will be replaced by magnesium

and will form Mg(Cl)2

Answer 2

Answer:

it will be Zn +HCl gives to ZnCl +H eloves