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Oxidising and Reducing Nature

KP for the fo...

Question

KP for the following reaction at 700k is 1.310^-3. The Kc at the same temperature for the reaction
2SO2 + O2 gives 2SO3 will be
Answer
Kc = 1.310^-3/(0.0821700)^{-1 =}7.410^-2
I want to know in (0.0821*700)^-1means what especially power minus one means

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Solution

K_p = K_c (RT) ^∆n
K_c = K_p / (RT) ^∆n
T = 700 K
R = 8.314 J mol ^-1 K^-1
∆n = (2 + 1) – 2 = 1
K_p = 1.3 X 10^-3 kPa = 1.3 Pa
Therefore,
K_c = 1.3 Pa / (8.314 J mol ^-1 K^-1) (700)¹
= 7.4x10^-2mol m^-3

= (0.0821700)^-1means 1/(0.0821700)

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