Tag: compounds of nitrogen - ammonia

Questions Related to compounds of nitrogen - ammonia

The formal charge on nitrogen atom in ammonium ion is 

chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

  1. $3$

  2. $2$

  3. $1$

  4. $4$

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Correct Option: A

Ammonia, $NH _3$ and hydrazine, $NH _2NH _2$, are two compounds of nitrogen, $N _2$. Which statement is correct?

chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

  1. The N-N bond in $NH _2NH _2$ is polar

  2. $NH _3$ and $NH _2NH _2$ have lone pairs of electrons but $N _2$ does not

  3. The oxidation number of each nitrogen in $NH _2NH _2$ is $+2$

  4. The reaction of nitrogen with hydrogen has a high activation energy

Show answer
Correct Option: D
Explanation:

Solution:- (D) The reaction of nitrogen with hydrogen has high activation energy.


The $N-N$ bond in $N{H} _{2} N{H} _{2}$ is a non-polar bond because $N$ and $N$ have the same electronegativity value.

${N} _{2}$ also has a lone pair of electron on each nitrogen atom.

The oxidation number of each hydrogen in $N{H} _{2}N{H} _{2}$ is $+1$, thus the oxidation number of each nitrogen in $N{H} _{2}N{H} _{2}$ is $-2$.

Due to high bond energy, the reaction of nitrogen with hydrogen has high activation energy.

Hence statement $\left( D \right)$ is correct.

$NaOCl$ reacts with $NH _3$ to produce :

chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

  1. $NH _2OH$

  2. $NH _2NH _2$

  3. $N _2$

  4. $NO$

Show answer
Correct Option: B
Explanation:

Reaction:

$NaOCl + NH _3 \rightarrow NH _2Cl + NaOH$
$NH _2Cl + NH _3 + NaOH \rightarrow N _2H _4 + NaCl + H _2O$.

Name a gas whose solution in water is alkaline.

chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

  1. Ammonia

  2. Chlorine

  3. $SO _2$

  4. $HCl$

Show answer
Correct Option: A
Explanation:

Ammonia readily dissolves in water with the liberation of heat. These aqueous solutions of ammonia are basic and are called ammonium hydroxide.
$ { NH } _{ 3 }+{ H } _{ 2 }O\rightleftharpoons { { NH } _{ 4 } }^{ + }+OH^{ - }$

Which of the following gas burns in oxygen with a green flame?

chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

  1. Ammonia

  2. Hydrogen chloride

  3. Sulphur dioxide

  4. Hydrogen sulphide

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Correct Option: A
Explanation:

On combustion, ammonia gas burns with pale yellowish green flame.

What are the products formed when ammonia is oxidized with copper oxide?

chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

  1. ${ N } _{ 2 }$

  2. ${ H } _{ 2 }O$

  3. $Cu$

  4. All of the above

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Correct Option: D
Explanation:

${ 2NH } _{ 3 }+3CuO\rightarrow { N } _{ 2 }+{ 3H } _{ 2 }O+3Cu$

Gases: ammonia, chlorine, hydrogen chloride and sulphur dioxide 

Select the gas that matches the description given.

Statement : The gas turns moist red litmus paper blue.

chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

  1. Chlorine

  2. Ammonia

  3. Sulphur dioxide

  4. Hydrogen chloride

Show answer
Correct Option: B
Explanation:

Ammonia is basic in nature which turns red litmus paper to blue and confirms that ammonia is alkaline gas.

Formation of ammonium sulphate from ammonia and dil sulphuric acid is given by :

chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

  1. ${3NH } _{ 3 }+{ H } _{ 2 }{ SO } _{ 4 }\rightarrow { \left(2 { NH } _{ 4 } \right) } _{ 2 }{ SO } _{ 4 }$

  2. ${ 2NH } _{ 3 }+{ H } _{ 2 }{ SO } _{ 4 }\rightarrow { \left( { NH } _{ 4 } \right) } _{ 2 }{ SO } _{ 4 }$

  3. ${ 2NH } _{ 3 }+3{ H } _{ 2 }{ SO } _{ 4 }\rightarrow { \left( { NH } _{ 4 } \right) } _{ 2 }{ SO } _{ 4 }$

  4. ${ 2NH } _{ 3 }+2{ H } _{ 2 }{ SO } _{ 4 }\rightarrow { \left( { NH } _{ 4 } \right) } _{ 2 }{ SO } _{ 4 }$

Show answer
Correct Option: B
Explanation:

${ 2NH } _{ 3 }+{ H } _{ 2 }{ SO } _{ 4 }\rightarrow { \left( { NH } _{ 4 } \right)  } _{ 2 }{ SO } _{ 4 }$

The two ions which are formed when ammonia dissolves in water are ammonium ion and ___________ .

chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

  1. ${ OH }^{ - }$

  2. ${ H _3O }^{ + }$

  3. ${ H }^{ +}$

  4. ${ O }^{ -2 }$

Show answer
Correct Option: A
Explanation:

Ammonia readily dissolves in water with the liberation of heat. The ions which are formed are ammonium ion and hydroxyl ion. The aqueous solution of ammonia is ammonium hydroxide.
$ { NH } _{ 3 }+{ H } _{ 2 }O\rightleftharpoons { NH } _{ 4 }^{ + }+{ OH }^{ - }$

Give balanced equation for reaction in which $NH _3$ is oxidized by a gas which is not oxygen.

chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

  1. $8{ NH } _{ 3 }+{ 3Cl } _{ 2 }\rightarrow 6{ NH } _{ 4 }Cl+2{ N } _{ 2 }$

  2. $4{ NH } _{ 3 }+{ 3Cl } _{ 2 }\rightarrow 3{ NH } _{ 4 }Cl+{ N } _{ 2 }$

  3. $8{ NH } _{ 3 }+{ 3Cl } _{ 2 }\rightarrow 6{ NH } _{ 4 }Cl+{ N } _{ 2 }$

  4. None of these

Show answer
Correct Option: C
Explanation:

Ammonia is oxidised by chlorine gas.
$8{ NH } _{ 3 }+{ 3Cl } _{ 2 }\rightarrow 6{ NH } _{ 4 }Cl+{ N } _{ 2 }$