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Question

For the reaction PCl3(g)+Cl2(g)PCl5(g) the value of Kc at 250oC is 26. The value of Kp at this temperature will be :
  1. 0.61
  2. 0.57
  3. 0.83
  4. 0.46

A
0.57
B
0.61
C
0.83
D
0.46
Solution
Verified by Toppr

Kp=Kc×(RT)Δn
Δn= no of moles of gaseous produt - number of moles of gaseous rectant
therefore Δn=12=1
R = 0.0821, T = 250 + 273.15 = 523.15 and Kc = 26
soKp=Kc×(RT)1
Kp=260.0821×523.15=0.61

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