Question

Name the gas evolved in the following

1. Calcium Carbonate is heated

2. Ammonium dichromate is heated

3. Silver nitrate is heated

4. Silver chloride kept in sunlight​

Answer 1

Explanation:

(i) Alkalis reacts with ammonium salts on heating to liberate ammonia gas.

Ca(OH)2+2NH4Cl→CaCl2+2NH3+H2O

(ii) When sodium nitrite reats with ammonium chloride nitrogen gas is liberated.

NaNO2+NH4Cl→NaCl+N2+2H2O

Answer 2

$\huge{\boxed{\rm{\red{Question}}}}$

Name the gas evolved in the following ✏

1. Calcium Carbonate is heated

2. Ammonium dichromate is heated

3. Silver nitrate is heated

4. Silver chloride kept in sunlight

$\huge{\boxed{\rm{\red{Answer}}}}$

Answer 1.

Carbon dioxide gas

Explanation

When heated above 840°C, calcium carbonate decomposes, releasing carbon dioxide gas and leaving behind calcium oxide – a white solid.

Answer 2.

Nitrogen gas

Explaintion

Ammonium dichromate decomposes on heating to produce nitrogen gas, water vapor (gaseous due to the temperature of the reaction), and solid chromium(III) oxide.

Answer 3.

Nitrogen dioxide and Oxygen.

Answer 4.

Chlorine gas

Explaintion

When silver chloride is exposed to light, it decomposes to form silver metal and chlorine gas.

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