In the laboratory preparation of nitric acid, it can be obtained below

1.	In the laboratory preparation of nitric acid, it can be obtained below 200∘C or above 200∘C, but the lower temperature is preferred. Which of the following reason(s) is /are correct? i. The glass apparatus may break at a higher temperature. ii. At lower temperature, potassium or sodium sulphate is formed, which cannot be easily removed from the apparatus. iii. Some quantity of nitric acid gets decomposed at a higher temperature.
Answer» In the laboratory preparation of nitric acid, it can be obtained below $200^{\circ}$ C or above $200^{\circ}$ C, but the lower temperature is preferred. Which of the following reason(s) is /are correct? i. The glass apparatus may break at a higher temperature. ii. At lower temperature, potassium or sodium sulphate is formed, which cannot be easily removed from the apparatus. iii. Some quantity of nitric acid gets decomposed at a higher temperature.

In the laboratory preparation of nitric acid, it can be obtained below 200∘C or above 200∘C, but the lower temperature is preferred. Which of the following reason(s) is /are correct? i. The glass apparatus may break at a higher temperature. ii. At lower temperature, potassium or sodium sulphate is formed, which cannot be easily removed from the apparatus. iii. Some quantity of nitric acid gets decomposed at a higher temperature.

Answer»

In the laboratory preparation of nitric acid, it can be obtained below $200^{\circ}$ C or above $200^{\circ}$ C, but the lower temperature is preferred. Which of the following reason(s) is /are correct?

i. The glass apparatus may break at a higher temperature.

ii. At lower temperature, potassium or sodium sulphate is formed, which cannot be easily removed from the apparatus.

iii. Some quantity of nitric acid gets decomposed at a higher temperature.

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