Question

When dilute hydrochloric acid is added to zinc

SEE THE OPTIONS IN THE GIVEN PHOTO ​

Answer 1

Answer:

when dilute hydrochloric acid is added to zinc pieces it produces hydrogen gas and heat is liberated. so option c) may be correct.

Answer 2

Answer: Small bubbles of hydrogen gas appear on the surface of zinc pieces

Explanation: Zn+2HCl(dil)\rightarrow ZnCl_2+H_2Zn+2HCl(dil)→ZnCl

2

+H

2

This is a single displacement reaction. Zinc being more reactive than hydrogen displaces hydrogen from its solution and forms zinc chloride which is white in color and liberates hydrogen gas which is a odorless gas.

Here zinc gets oxidized to Zn^{2+

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