Tag: compounds of nitrogen - ammonia

Questions Related to compounds of nitrogen - ammonia

Statement 1: $NH _{3}$ can be best collected by water displacement.

Statement 2: $NH _{3}$ is a polar substance.

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

  1. Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1

  2. Both Statement 1 and Statement 2 are correct and Statement 2 is not the correct explanation of Statement 1

  3. Statement 1 is correct but Statement 2 is not correct

  4. Statement 1 is not correct but Statement 2 is correct

  5. Both the Statement 1 and Statement 2 are not correct

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Correct Option: D
Explanation:

Nitrogen, oxygen and hydrogen can be collected by water displacement because they are only slightly soluble in water. But hydrogen chloride or ammonia can not be separated since both are very highly soluble in water and will react to form hydrochloric acid or ammonium hydroxide respectively so statement 1 is not true.

$NH _3$ is a polar substance so statement 2 is correct.

When excess of ammonia is used:


 $3Cl _2+8NH _3$$\longrightarrow$$A+B$

When excess of chlorine is used:

$3Cl _2+4NH _3$$\longrightarrow$$C+D$

The oxidation state of nitrogen in compound $A$ is:

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

  1. $-3$

  2. $+3$

  3. $+5$

  4. $0$

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Correct Option: A
Explanation:

$8 NH _3 + 3 Cl _2 \rightarrow  6 NH _4Cl+N _2$

 Compound A is $NH _4Cl$ 

$1(x)+4(1)+1(-1)=0$

$x+4-1=0$

$x=-3$

The oxidation state of compound A is $-3$

Hence option A is correct.

When excess of ammonia is used:
 $3Cl _2+8NH _3$$\longrightarrow$$A+B$
When access of chlorine is used:
$3Cl _2+4NH _3$$\longrightarrow$$C+D$
Oxidation state of nitrogen in compound $B$ is:

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

  1. $0$

  2. $+1$

  3. $+3$

  4. $-3$

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Correct Option: A
Explanation:

$8 NH _3 + 3 Cl _2 \rightarrow  6 NH _4Cl+N _2$

$3Cl _2+4NH _3 \rightarrow  3NH _4Cl+NCl _3$

 Compound  B is $N _2$ Here as the nitrogen is in elemental state so its oxidation state is $0$

 Hence option A is correct.

Fertilizer used in excess by the farmers does not cause water pollution.

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

  1. True

  2. False

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Correct Option: B
Explanation:

Fertilizers in excess damage the soil and gets added into water while irrigation and they gets stagnated and produce water pollution.

So,the given statement is false.