Question

The equilibrium pressure of the system $N{H}_{4}H{S}_{\left(s\right)}$$\leftrightharpoons$$N{H}_3$(g) + $H_{2}S$(g) is 8 atmosphere at a certain temerature at a certian temperature.The equilibrium constant $K_p$s

• A. 4.0
• B. 16.0
• C. 8.0
• D. 32.0

Answer 1

The correct option is B

16.0

$N{H}_{4}H{S}_{\left(s\right)}$$\leftrightharpoons$$N{H}_3$(g) + $H_{2}S$

Let $P_{N{H}_3}$ = $P_{H_{2}S}$ = 's'

$P_{total}$ = $P_{N{H}_3}$ + $P_{H_{2}S}$ = x + x = 2x = 8; x = 4

$K_p$ = $P_{N{H}_3}$ $\times$ $P_{H_{2}S}$ = 4 $\times$ 4 = 16 ${atm}^2$