17) At 27°C, Kp-0095 for the equilibrium: 17) NH4HS (s)NH3 (8) H2S (8) 0.145(0.0

Question

17) At 27°C, Kp-0095 for the equilibrium: 17) NH4HS (s)NH3 (8) H2S (8) 0.145(0.06)(300.5)1 A sample of solid NH4HS is placed in a closed vessel and allowed to equilibrate. Calculate the eauilibrium partial pressure (atm) of ammonia, assuming that some solid NH4HS remains 18) Kp 0.0198 at 721 K for the reaction 18) 2HI () H2 (g)+2 (8) In a particular experiment, the partial pressures of H2 and 2 at equilibrium are 0.836 and 6.701 atn, respectively. The partial pressure of His atm. 19) According to the Arrhenius concept, an acid is a substance that o1

Explanation / Answer

18.

2 HI(g) -------------- H2(g)   + I2(g)

PH2= 0.836atm

PI2 = 0.701 atm

Kp = PH2 xPI2/P^2HI

0.0198 = 0.836x0.701/P^2HI

P^2HI = 29.598

PHI = 5.44 atm

Partial pressure of HI = 5.44 atm.

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