A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with $N H_{3}$ an unstable trihalide is formed. In this process, the oxidation state of nitrogen changes from

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Solution

The correct option is D $- 3$ to $+ 3$
$M n O_{2} b l a c k + 4 H C l ⟶ M n {C l}_{2} + 2 H_{2} O + {C l}_{2} g r e e n i s h y e l l o w g a s$
$- 3 N H_{3} + 3 {C l}_{2} ⟶ + 3 N {C l}_{3} + 3 H C l$

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Similar questions

Q. A black compound of manganese reacts with a halogen acid to give greenish-yellow gas. When an excess of this gas reacts with

N H_{3}

an unstable trihalide is formed. In this process the oxidation state of nitrogen changes from :

Solution A reacts with an acid B (which gives greenish-yellow gas on reacting with oxidising agents like $P b_{3} O_{4}$ to give white precipitate C insoluble in nitric acid but soluble in ammonium hydroxide. Name A, B and C.

Q. Assertion :

A g {N O}_{3}

reacts with

K C N

to form white ppt. of

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. This white ppt. disappears when excess

K C N

is added. Reason:

A g C N

decomposes to form siver-carbide and evovle

N_{2}

gas.

Q. When a brown compound of Mn(A) is treated with

H C l

, it gives a gas B. The gas B taken in excess reacts with

N H_{3}

to give an explosive compound C. The compounds A, B and C are:

Q. When nitrogen reacts with hydrogen under high temperature and pressure to form ammonia gas. This is an example of:

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A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with NH3 an unstable trihalide is formed. In this process, the oxidation state of nitrogen changes from

The correct option is D −3 to +3MnO2black+4HCl⟶MnCl2+2H2O+Cl2greenishyellowgas−3NH3+3Cl2⟶+3NCl3+3HCl

A black compound of manganese reacts with a halogen acid to give greenish yellow gas. When excess of this gas reacts with $N H_{3}$ an unstable trihalide is formed. In this process, the oxidation state of nitrogen changes from

The correct option is D $- 3$ to $+ 3$
$M n O_{2} b l a c k + 4 H C l ⟶ M n {C l}_{2} + 2 H_{2} O + {C l}_{2} g r e e n i s h y e l l o w g a s$
$- 3 N H_{3} + 3 {C l}_{2} ⟶ + 3 N {C l}_{3} + 3 H C l$