H 2(g)+2 AgCl (s) leftharpoons 2 Ag (s)+2 HCl (a q) E text cell ° at 25° C for the cell is 0.22 V. The equilibrium constant at 25° C is

Question

H 2(g)+2 AgCl (s) leftharpoons 2 Ag (s)+2 HCl (a q) E text cell ° at 25° C for the cell is 0.22 V. The equilibrium constant at 25° C is (A) 2.8 × 107 (B) 5.2 × 108 (C) 2.8 × 105 (D) 5.2 × 104

Tardigrade Admin · Accepted Answer

E text cell 0=(0.059/ n ) log K C 0.22=(0.059/2) log K c log K c =(0.22 × 2/0.059)=7.457 K C =2.8 × 107

Q. $H_{2 (g)} + 2 A g C l_{(s)} ⇌ 2 A g_{(s)} + 2 H C l_{(a q)}$
$E_{cell}^{\circ}$ at $2 5^{\circ} C$ for the cell is $0.22 V$ . The equilibrium constant at $2 5^{\circ} C$ is

$2.8 \times 1 0^{7}$

$5.2 \times 1 0^{8}$

$2.8 \times 1 0^{5}$

$5.2 \times 1 0^{4}$

$E_{cell}^{0} = \frac{0.059}{n} lo g K_{C}$
$0.22 = \frac{0.059}{2} lo g K_{c}$
$lo g K_{c} = \frac{0.22 \times 2}{0.059} = 7.457$
$K_{C} = 2.8 \times 1 0^{7}$

Q. H2(g)​+2AgCl(s)​⇌2Ag(s)​+2HCl(aq)​ Ecell ∘​ at 25∘C for the cell is 0.22V. The equilibrium constant at 25∘C is

2.8×107

5.2×108

2.8×105

5.2×104