Asked by Edina

If you heat a mixture of Zn and HCl,and
heat them together until all liguid has evaporated because excess HCl will be given off. What substance is left in the dish after the liquid has evaporated.

Answers

Answered by DrBob222
Zn(s) + 2HCl(aq) --> ZnCl2(aq) + H2(g)
So H2 is a gas and goes up the fume hood, the evaporating water does the same as does any excess HCl. What's left?
Answered by pem
Zn(s) + HCl(aqu)^ heat = ZnCl (zinc chloride)+ H(gaseous)
Answered by DrBob222
The equation by pem is not balanced and the ZnCl2 formula is incorrect. Also hyrogen is diatomic (H2).
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