In which of the following reactions is $K_{p}$ < $K_{c}$ ?

C O (g) + C l_{2} (g) ⇌ C O C I_{2} (g)

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C O (g) + 3 H_{2} (g) ⇌ C H_{4} (g) + H_{2} O (g)

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2 B r C l (g) ⇌ C l_{2} (g) + B r_{2} (g)

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l_{2} (g) ⇌ 2 l (g)

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Solution

The correct options are
A $C O (g) + C l_{2} (g) ⇌ C O C I_{2} (g)$
B $C O (g) + 3 H_{2} (g) ⇌ C H_{4} (g) + H_{2} O (g)$
$K_{p} = K_{c} (R T)^{Δ n}$ thus, $K_{p} < K_{c}$ if $Δ n < 0$ .
For reaction A and B, $Δ n$ = -1 and -2 respectively.
For reaction C and D, $Δ n$ = 0 and 1 respectively.

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Similar questions

C O (g) + H_{2} O (g) ⇌ {C O}_{2} (g) + H_{2} (g); K_{1}

{C H}_{4} (g) + H_{2} O (g) ⇌ C O (g) + 3 H_{2} (g); K_{2}

{C H}_{4} (g) + 2 H_{2} O (g) ⇌ {C O}_{2} (g) + {4 H}_{2} (g); K_{3}

(i) C O (g) + H_{2} O (g) ⇌ C O_{2} (g) + H_{2} (g); K_{1} (i i) C H_{4} (g) + H_{2} O (g) ⇌ C O (g) + 3 H_{2} (g); K_{2} (i i i) C H_{4} (g) + 2 H_{2} O (g) ⇌ C O_{2} (g) + 4 H_{2} (g); K_{3}

C O (g) + C l_{2} (g) ⇋ C O C l_{2} (g)

K_{p} / K_{c}

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\frac{K_{p}}{K_{c}}

{C O}_{(g)} + {C l}_{2 (g)} ⇌ {C O C l}_{2 (g)}

K_{p} / K_{c}

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