Tag: nitrogen and sulfur

Questions Related to nitrogen and sulfur

Ammonia reacts with excess of chlorine to form :

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

  1. ${ N } _{ 2 }+N{ H } _{ 4 }Cl$

  2. $N{ Cl } _{ 3 }$ and $HCl$

  3. $N{ H } _{ 4 }Cl$ and $N{ Cl } _{ 3 }$

  4. ${ N } _{ 2 }$ and $HCl$

Show answer
Correct Option: B
Explanation:

Pure chlorine gas may react vigorously with ammonia gas. An excessive mix of the two gases in air can produce hazardous compounds such as nitrogen trichloride.

The following reaction takes place:

$N{ H } _{ 3 }+3{ Cl } _{ 2 }\longrightarrow N{ Cl } _{ 3 }+3HCl$

Ammonia reacts with excess of chlorine to form $ N{ Cl } _{ 3 } $ and $ HCl $.

Which of the following compounds are formed by the reaction of ammonia with acids?

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

  1. Calcium ammonium nitrate

  2. Ammonium chloride

  3. Ammonium phosphate

  4. Ammonium sulphate

Show answer
Correct Option: A,B,C,D
Explanation:

$ { NH } _{ 3 }+{ HNO } _{ 3 }\longrightarrow { NH } _{ 4 }NO\ { NH } _{ 3 }+HCl\longrightarrow { NH } _{ 4 }Cl\ { NH } _{ 3 }+{ H } _{ 4 }{ PO } _{ 4 }\longrightarrow ({ { NH } _{ 4 }) } _{ 3 }{ PO } _{ 4 }\ { NH } _{ 3 }+{ H } _{ 2 }{ SO } _{ 4 }\longrightarrow { { (NH } _{ 4 }) } _{ 2 }{ PO } _{ 4 }\  $

All of the above in respective order. 

Ammonia gas cannot be dried by passing through :

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

  1. $conc.{ H } _{ 2 }S{ O } _{ 4 }$

  2. anhydrous $CaO$

  3. ${ P } _{ 2 }{ O } _{ 5 }$

  4. $CuS{ O } _{ 4 }$

Show answer
Correct Option: A,C
Explanation:

Because ammonia and water will form some amount of ammonium hydroxide, $N{ H } _{ 4 }OH$. The hydroxide will react with the acid ${ H }^{ + }$ ions from the acid and forms water. Addition of an acid to even a mild base like $N{ H } _{ 4 }OH$ is counter-productive to drying.

Identify the probable products for the reaction of $N{ H } _{ 3 }$ with ${ Cl } _{ 2 }$.

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

  1. ${ N } _{ 2 }$ and $N{ H } _{ 4 }Cl$

  2. $N{ Cl } _{ 3 }$ and $HCl$

  3. ${ N } _{ 2 }$ and $N{ Cl } _{ 3 }$

  4. $N{ H } _{ 4 }Cl$ and $HCl$

Show answer
Correct Option: A,B
Explanation:

Possible reactions of $N{ H } _{ 3 }$ and ${ Cl } _{ 2 }$ are :

  1. $N{ H } _{ 3 }+{ Cl } _{ 2 }\longrightarrow { N } _{ 2 }+N{ H } _{ 4 }Cl$
  2. $N{ H } _{ 3 }+{ Cl } _{ 2 }\longrightarrow N{ C }l _{ 3 }+HCl$

Which of the following has highest proton affinity:

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

  1. Stilbine

  2. Arsine

  3. Phosphine

  4. Ammonia

Show answer
Correct Option: D
Explanation:

As the size of the nitrogen in ammonia is less than the other elements in the hydrides of that group ammonia has the more affinity towards the proton than the any other hydride of that group like phosphine, stobine and arsine.
Hence option D is correct.

The chemical used for cooling in refrigeration is:

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

  1. $CO _2$

  2. $NH _4OH$

  3. $NH _4Cl$

  4. liq. $NH _3$

Show answer
Correct Option: D
Explanation:

Its vaporization property, ammonia is an used as a refrigerant. It was used earlier to the use of chlorofluorocarbons (Freons). Anhydrous ammonia is widely used in industrial refrigeration.

$NH _3$ gas is liquefied more easily than $N _2$. Hence:

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

  1. vander Waals' constants a and b of $NH _3$ > that of $N _2$

  2. vander Waals' constants a and b of $NH _3$ < that of $N _2$

  3. $a(NH _3)$ > $a(N _2)$ but $b(NH _3)$ < $b(N _2)$

  4. $a(NH _3)$ < $a(N _2)$ but $b(NH _3)$ > $b(N _2)$

Show answer
Correct Option: C
Explanation:
  • In vander Wall's equation of state, the constant 'a' provides a correction for the intermolecular forces. Constant 'b' is a correction for finite molecular size and its value is the volume of one mole of the atoms or molecules.
  • For a gas which is easily liquifiable value of 'a' will be more and value of 'b'  will be less.
  • Hence in the question it is given that $NH _3$ is liquefied more easilt than $N _2$ and hence $a(NH _3)>a(N _2)$ but $b(NH _3)<b(N _2)$.

Which compound form linear polymer due to H-bond :

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

  1. H2O

  2. NH3

  3. HBr

  4. HCl

Show answer
Correct Option: B
Explanation:

$NH _3$ forms linear polymer due to Hydrogen bonding. Intermolecular Hydrogen bonding occurs between Nitrogen of one molecule and Hydrogen of other molecule. This continues and makes it a linear polymer.

What is the amount of hear released when $3.4$ gm $NH _3$(g) and $6.4$gm $O _2$(g) react at constant temperature and pressure by the following equation.
$4NH _3$(g) + $5O _2$ (g) \rightarrow $4NO(g)$ + $6H _2O$(g) . $\Delta _1H^0 = 900 k.$

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

  1. $45$ kJ

  2. $250$ kJ

  3. $36$ kJ

  4. None of these

Show answer
Correct Option: C
Explanation:

The molecular weights of $\displaystyle NH _3$ and $\displaystyle O _2$ are 17 g/mol and 32 g/mol respectively.
3.4 g $\displaystyle NH _3 = \dfrac {3.4 \ g}{ 17 \ g/mol}=0.2 \ mol$
6.4 g $\displaystyle O _2= \dfrac {6.4 \ g}{32 \ g/mol}=0.2 \ mol$
0.2 moles of $\displaystyle O _2$ will react with $\displaystyle 0.2 \times \dfrac {4}{5}=0.16$ moles of $\displaystyle NH _3$. But 0.2 moles of
$\displaystyle NH _3$ are present. Hence, $\displaystyle O _2$ is the limiting reagent and $\displaystyle NH _3$ is excess reagent.

When 5 moles of $\displaystyle O _2$ react, the heat released is 900 kJ.
When 0.2 moles of $\displaystyle O _2$ react, the heat released will be
$\displaystyle 900 \ kJ \times \dfrac { 0.2}{5}=36 \ kJ$.

Hypotism is a powerful art of suggestion. Under the influence of hypnotism, subjects may report as normal, a slightly smell from:

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

  1. A source of pure hydrogen gas

  2. An ammonia bottle

  3. An oxygen cylinder

  4. A source of pure nitrogen gas

Show answer
Correct Option: B
Explanation:

Ammonia has a strong smell which can be easily detected even from meters of distances. Hence, a slight smell of ammonia bottle can be detected.