Question

Answer the following questions:
grannules with dilute H2SO4 with chemical equation
(1) Explain the reaction of zinc grann
(2) Does zinc evolve H2 gas when it
as when it reacts with dilute HCl and dilute HNO3 ? Express
the reaction with the equation.
wuation. If zinc does not reacts with some specific acids
then give its reason.​

Answer 1

Answer:

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Answer 2

Answer:

Zinc reacts with sulphuric acid to form since sulphate and hydrogen gas is evolved

Zinc reacts with hydrochloric acid to form zinc chloride and hydrogen gas is evolved however hydrogen is not when reacted with nitric acid instead since nitrate nitrogen dioxide and water are formed

Explanation:

Zinc is a metal and when Grimes of since are placed in dilute sulphuric acid solution zinc sulphate and hydrogen gas is evolved

Zinc sulphate is a soluble salt hence the reaction goes into completion

Zn + H2SO4 — ZnSO4 + H2

Zinc reacts with hydrochloric acid to form soluble salt since chloride and hydrogen gas is evolved

2Zn + 2HCl — 2ZnCl + H2

However hydrogen gas is not evolved when zinc react with nitric acid however nitrogen dioxide ,zinc nitrate and water are formed

Zn + HNO3 — Zn(NO3)2 + NO2 + H2O

Hydrogen gas is not evolved because nitric acid acts as an oxidising agent and it oxidises the hydrogen formed into water.