Tag: nitrogen and sulfur

Quizzes (10) Questions (295)

Questions Related to nitrogen and sulfur

Multiple choice chemistry nitrogen and sulfur ammonia and fertilizers preparation of ammonia-laboratory method and haber's process ammonia

Give the balanced reaction for the manufacture of the ammonia gas.

  1. $3{ N } _{ 2 }+3{ H } _{ 2 }\rightarrow 6{ NH } _{ 3 }$
  2. ${ N } _{ 2 }+3{ H } _{ 2 }\rightarrow 2{ NH } _{ 3 }$
  3. ${ N } _{ 2 }+3{ H } _{ 2 }\rightarrow { NH } _{ 3 }$
  4. ${ N } _{ 2 }+6{ H } _{ 2 }\rightarrow 4{ NH } _{ 3 }$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

${ N } _{ 2 }+3{ H } _{ 2 }\rightarrow 2{ NH } _{ 3 }$
In the manufacture of ammonia process employed is Haber-Bosch which occurs in the presence of catalyst at high temperature and high pressure.

Multiple choice chemistry nitrogen and sulfur ammonia and fertilizers preparation of ammonia-laboratory method and haber's process ammonia

Which of the following reaction represents the balanced form of conversion of Ca to ammonia?

  1. ${ 2NH } _{ 4 }Cl+Ca\left( OH \right) _{ 2 }\xrightarrow { \triangle } { CaCl } _{ 2 }+{ 2H } _{ 2 }O+{ 2NH } _{ 3 }$
  2. ${ NH } _{ 4 }Cl+Ca\left( OH \right) _{ 2 }\xrightarrow { \triangle } { CaCl } _{ 2 }+{ 2H } _{ 2 }O+{ NH } _{ 3 }$
  3. ${ 2NH } _{ 4 }Cl+3Ca\left( OH \right) _{ 2 }\xrightarrow { \triangle } 3{ CaCl } _{ 2 }+{ 2H } _{ 2 }O+{ 2NH } _{ 3 }$
  4. ${ 4NH } _{ 4 }Cl+Ca\left( OH \right) _{ 2 }\xrightarrow { \triangle } 2{ CaCl } _{ 2 }+{ 2H } _{ 2 }O+{ 2NH } _{ 3 }$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The balanced chemical equation for the laboratory preparation of ammonia from ammonium chloride and calcium hydroxide is 2NH4Cl + Ca(OH)2 -> CaCl2 + 2H2O + 2NH3. Option A correctly balances all atoms: 2 nitrogen, 8 hydrogen, 2 chlorine, 2 calcium, 2 oxygen. Options B-D have unbalanced stoichiometry - they don't account for the 2:1 ratio of ammonium chloride to calcium hydroxide needed.

Multiple choice chemistry nitrogen and sulfur ammonia and fertilizers preparation of ammonia-laboratory method and haber's process ammonia

Equation for the following reaction.
$Cu+{ xHNO } _{ 3 }\rightarrow Cu\left( { NO } _{ 3 } \right) _{ 2 }+{ 2H } _{ 2 }O+{ 2NO } _{ y }$
Find the value of $x$ and $y$.

  1. $x=4, y= 2$
  2. $x=1, y= 2$
  3. $x=2, y= 2$
  4. $x=4,, y= 1$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

$Cu+{ 4HNO } _{ 3 }\rightarrow Cu\left( { NO } _{ 3 } \right) _{ 2 }+{ 2H } _{ 2 }O+{ 2NO } _{ 2 }$

Multiple choice chemistry nitrogen and sulfur ammonia and fertilizers preparation of ammonia-laboratory method and haber's process ammonia

Which of the following is/are correct?

  1. Hydrolysis of $NCl _3$ gives $NH _3$ and $HClO$
  2. $NH _3$ is less stable than $PH _3$
  3. $NH _3$ is a weak reducing agent compared to $PH _3$

  4. Nitric oxide is paramagnetic
Reveal answer Fill a bubble to check yourself
A,C,D Correct answer
Explanation

A) $NCl _3$ is hydrolyzed by hot water to release ammonia and hypochlorous acid.
 $NCl _3 + 3H _2O\rightarrow NH _3 + 3HOCl$

B)  $NH _3$ is less stable than $PH _3$, because $NH _3$ is more stable than $PH _3$ due to inter molecular hydrogen bonding.
C) $NH _3$ is a weak reducing agent compared to $PH _3$, because from $NH _3$ to $PH _3$ reducing nature increases down the group.
D) Nitric oxide is paramagnetic, because it is having unpaired electrons.
Hence, options A,C & D are correct.

Multiple choice chemistry nitrogen and sulfur ammonia and fertilizers preparation of ammonia-laboratory method and haber's process ammonia

 Which compound does not give ammonia gas on reaction with water ?

  1. $ \mathrm{M}\mathrm{g} _{3}\mathrm{N} _{2}$
  2. $ \mathrm{A}\mathrm{l}\mathrm{N}$
  3. $\mathrm{C}\mathrm{a}\mathrm{C}\mathrm{N} _{2}$
  4. $\mathrm{C}\mathrm{a}(\mathrm{C}\mathrm{N}) _{2}$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
$Mg _3N _2 + 6H _2O \longrightarrow3Mg(OH) _2 + 2NH _3$

$AlN + 3H _2O \longrightarrow NH _3 + Al(OH) _3$

$2H _2O + Ca(CN) _2 \longrightarrow Ca(OH) _2 + 2HCN$

$CaCN _{2} + 3H _{2}O\longrightarrow$ $CaCO _{3} + 2NH _{3}$

$Ca(CN) _2$ does not produce ammonia on reacting with water.