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Chemical Properties of Ammonia

Potassium oxi...

Question

Potassium oxide reacts with dilute nitric acid to form a soluble salt. Name this salt.

A

Potassium hydroxide

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B

Potassium nitrate

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C

Potassium hydride

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D

Potassium nitrite

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Solution

The correct option is B
Potassium nitrate

Potassium oxide reacts with dilute nitric acid to form a soluble salt of potassium nitrate and water.

$K_{2} O + 2 H N O_{3} \to 2 K N O_{3} + H_{2} O$

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Q. (a) When nitric acid is prepared by the action of concentrated sulphuric acid on potassium nitrate, what is the special feature of the apparatus used?
(b) Write the equation for the laboratory preparation of nitric acid from potassium nitrate and concentrated sulphuric acid.
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