Question

zinc granules are heated with dilute sulphuric acid in a breaker, a)name the gas liberated. b) how do you test and confirm the gas so liberated? c)write the balanced chemical reaction for this reaction. d) name the type of reaction.​

Answer 1

Answer:

i) Zinc reacts with dilute sulphuric acid(H

2

​

SO

4

​

) to form zinc sulphate (ZnSO

4

​

) and hydrogen(H

2

​

) gas.

Zn(s)+H

2

​

SO

4

​

(aq)→ZnSO

4

​

(aq)+H

2

​

(g)

ii) Zinc reacts with hydrochloric acid to form zinc chloride(ZnCl

2

​

) and hydrogen(H

2

​

) gas.

Zn(s)+2HCl(aq)→ZnCl

2

​

(aq)+H

2

​

(g)

iii) Zinc reacts with sodium hydroxide to form sodium zincate(Na

2

​

ZnO

2

​

) and hydrogen(H

2

​

).

Zn(s)+2NaOH(aq)→Na

2

​

ZnO

2

​

(aq)+H

2

​

(g)

Explanation:

Answer 2

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$\huge\bold{\mathtt{QUESTION}}$

➡ Zinc granules are heated with dilute sulphuric acid in a breaker.

a) Name the gas liberated.

b) How do you test and confirm the gas so liberated ?

c) Write the balanced chemical reaction for this reaction.

d) Name the type of reaction.

$\rule{200}2$

$\huge\bold{\mathtt{ANSWER}}$

☯ When zinc granules are heated with dilute sulphuric acid to form zinc sulphate $\sf ZnSO_4$ with liberation of hydrogen gas $\sf H_2$ .

a) Hydrogen gas $\sf H_2$ is liberated .

b) The given gas can be tested by bringing a flame nearby the test containing the gas , if it burns with a pop sound , presence of hyrogen is confirmed .

c) $\sf Zn\:+\:H_2 SO_4 = ZnSO_4\:+\: H_2$

d) Type of reaction - Displacement Reaction

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