In which of the following reactions heterogeneous catalysis is involved?
(I) $2 S O_{2}$ + $O_{2}$ $V_{2} O_{5} ⟶$ $2 S O_{3}$
(II) $2 S O_{2}$ + $O_{2}$ $N O_{(g)} ⟶$ $2 S O_{3}$
(III) $2 N_{2} + 3 H_{2}$ $F e ⟶$ $2 N H_{3}$
(IV) $C H_{3} C O O C H_{3}$ + $H_{2} O$ $H C l_{(a q)} ⟶$ $C H_{3} C O O H$ + $C H_{3} O H$

(I), (III)

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(II), (III), (IV)

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(I), (II), (III)

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(IV)

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Solution

The correct option is A (I), (III)
When reacting species and products are in the same phase that of catalyst is called homogeneous catalysis. When reacting species and products are in a different phase that of catalyst is called heterogeneous catalysis.

Reaction (I) and (III) are heterogeneous catalysis since reacting species and products are in the gas phase and catalyst is in the solid phase.

So, the correct option is A.

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Similar questions

P {C l}_{5} \to P {C l}_{3} + {C l}_{2}

2 {S O}_{2} + O_{2} \to 2 {S O}_{3}

N_{2} + 3 H_{2} \to 2 {N H}_{3}

2 K C l O_{3} \to 2 K C l + 3 O_{2}

2 S O_{2} + O_{2} \to 2 S O_{3}

V_{2} O_{5}

2 S O_{2} + O_{2} ⟶ 2 S O_{3} + 42 k c a l

The catalyst used in the reaction $2 S O_{2} + O_{2} ⟷ 2 S O_{3}$ is__________.

{2 S O}_{2} + O_{2} ⇌ {2 S O}_{3}

K_{c}

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