Question

what would you observe an adding dilute Hcl acids to zinc Metal? how will you check the pressure of the hydrogen gas
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Answer 1

Answer:

Zn(s)+2HCl(dil.)→ZnCl2 + H2(g)

Odourless and colourless gas hydrogen is evolved with bubble on surface of zinc.

by pop up test we will check the presence of H2 gas