Which salt is used along with concentrated sulphuric acid for the laboratory preparation of nitric acid?

Sodium nitrite or potassium nitrite

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Sodium nitrate or potassium nitrite

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Sodium nitrate or potassium nitrite

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Sodium nitrate or potassium nitrate

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Solution

The correct option is D Sodium nitrate or potassium nitrate
Sodium nitrate or potassium nitrate and concentrated sulphuric acid are the compounds required for the laboratory preparation of nitric acid.
$K N O_{3} + H_{2} S O_{4} \to K H S O_{4} + H N O_{3}$

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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.
(c) Potassium nitrate is prepared from potassium hydroxide and nitric acid. Name the type of this reaction.
(d) Which gas is produced when potassium nitrate is heated? Write the equation for the reaction. [5 MARKS]

Potassium nitrate on strong heating decomposes as under:
2KNO₃ $\overset{∆}{\to}$ 2KNO₂+ O₂
Calculate:
(i) weight of potassium nitrite formed.
(ii) weight of oxygen formed when 5.05 g of potassium nitrate decomposes completely.
(K = 39, O = 16, N = 14)

Write the equation for the laboratory preparation of nitric acid from potassium nitrate and concentrated sulphuric acid.

Q. In laboratory Nitric acid is prepared by heating potassium Nitrate with :

Q. Write the balanced equation for the laboratory preparation of nitric acid from potassium nitrate.

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Which salt is used along with concentrated sulphuric acid for the laboratory preparation of nitric acid?

The correct option is D Sodium nitrate or potassium nitrateSodium nitrate or potassium nitrate and concentrated sulphuric acid are the compounds required for the laboratory preparation of nitric acid. KNO3 + H2SO4 → KHSO4 + HNO3

The correct option is D Sodium nitrate or potassium nitrate
Sodium nitrate or potassium nitrate and concentrated sulphuric acid are the compounds required for the laboratory preparation of nitric acid.
$K N O_{3} + H_{2} S O_{4} \to K H S O_{4} + H N O_{3}$