Question

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A sample of So, decomposes according to the following equation: 2 503(g) = 2 50_1911040 An equilibrium mature in a 2-L vessel at 604 °C, contains 0.00928 g of So, 0.0150 gʻof So, and 0.00335 g of - (a) Calculate Kfor this reaction at this temperature. (b) What is the total pressure exerted by the equilibrium mature of gases? atm

Answer 1

a) sample of so, decomposes according to 2509) = 250,49)+1029) ke for above reaction is given by law of mass achson KE [502] [0,3 RON At equilibrium, [soz]? [so = moles of so, mass of so2 molat may op 30, X Volume of uend [50] = 0.015 -- = 1.17 X10-4M 64 X 2 [ 0, 7 man 02 5.23 x 105M 0.00335 32 X 2 molas non of volume vessel [SO] - mass of so, 0.00928 -6.8 X10M 80 x 2 mola man of so, volume of vessel Purring above values in equation ka (1.19X10-4) 3x5.23410-5 (5.8x10-5) 2 1 kc = 2.13 x 10-4 molle) We know that kp= X(RT) Ang sum of stechion where Ang survejai gas constant CaRmperatule sum of sto chiometric) Ce efficient of Products Loefficent of Beatran

for this reaction, - Ang = 3 -2.1 Kp = KELRTjon Kp = 2.13x10-4 x (0.08 21 X 877) [Kp = 1.53 x 10-2 am) (6) Toral pressure of equilibrium mixture, P P = Partitel pressure of soz + Pachal pressure of Partial premure of at equilibrium . so, at equilibrium O₂ ao equilibrium of SO, SO₂, 80₂ assuming we ideal gas behaviour can write PVE DRT or P=ORT [P= CRT] where - molarity P= Pro3 + eso, t Poz p= Cso, RT & Cso, RT & CORRT where leg, (so, co, are equilibrium concernens 04 503, 50, 20, P= ((sogt (so, & (62) XRT purring values of csoz, 6go, Co₂ , R & T P ( 1.19X10-4+5.23x10-5 + 5.8x10-5) X 0.0821 X 877 can 1.637 x 102 atm]
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