In which of the following equilibrium Kc and Kp are not equal?

Question

In which of the following equilibrium Kc and Kp are not equal? (A) 2 NO ( g ) leftharpoons N 2( g )+ O 2( g ) (B) SO 2( g )+ NO 2( g ) leftharpoons SO 3( g )+ NO ( g ) (C) H 2( g )+ I 2( g ) leftharpoons 2 HI ( g ) (D) 2 C ( s )+ O 2( g ) leftharpoons 2 CO 2( g )

Tardigrade Admin · Accepted Answer

The reaction for which the number of moles of gaseous products

(n_{p})

is not equal to the number of moles of gaseous reactants

(n_{R})

, has different value of

K_{C}

and

K_{P}

From the equation,

K_{P} = K_{C} \times (RT)^{Δ n_{g}}

where,

[Δ n_{g}

gaseous

= n_{P} - n_{R}]

(a)

n_{P} = n_{R} = 2

thus,

K_{P} = K_{C}

(b)

n_{P} = n_{R} = 2

thus,

K_{P} = K_{C}

(c)

n_{P} = n_{R} = 2

thus,

K_{P} = K_{C}

(d) n_{P} = 2, n_{R} = 1

thus,

K_{P} \neq = K_{C}

Q. In which of the following equilibrium $K_{c}$ and $K_{p}$ are not equal?

$2 N O_{(g)} ⇌ N_{2} (g) + O_{2} (g)$

$S O_{2} (g) + N O_{2} (g) ⇌ S O_{3} (g) + N O_{(g)}$

$H_{2 (g)} + I_{2} (g) ⇌ 2 H I_{(g)}$

$2 C_{(s)} + O_{2} (g) ⇌ 2 C O_{2} (g)$

Q. In which of the following equilibrium Kc​ and Kp​ are not equal?

2NO(g)​⇌N2​(g)+O2​(g)

SO2​(g)+NO2​(g)⇌SO3​(g)+NO(g)​

H2(g)​+I2​(g)⇌2HI(g)​

2C(s)​+O2​(g)⇌2CO2​(g)

Q. In which of the following equilibrium $K_{c}$ and $K_{p}$ are not equal?

$2 N O_{(g)} ⇌ N_{2} (g) + O_{2} (g)$

$S O_{2} (g) + N O_{2} (g) ⇌ S O_{3} (g) + N O_{(g)}$

$H_{2 (g)} + I_{2} (g) ⇌ 2 H I_{(g)}$

$2 C_{(s)} + O_{2} (g) ⇌ 2 C O_{2} (g)$