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CBSE Class 11-science Answered

For the water gas reaction  c(g)+h2o(g)=co(g)+h2(g ) the standard Gibbs free energy for the reaction at 1000k is -8.1 k^3 /mol. Calculate its Equlipriam constant.  (R=8.314×10^-3k^3/k/mol).
Asked by Venkatasubrmanian | 27 Mar, 2019, 10:30: AM
answered-by-expert Expert Answer
Given:
 
Gibbs free energy ΔG0 = −8.1 kJ
 
                                 = 8100 J
 
Temperature, T = 1000 K
 
Gas constant, R = 8.314 J/mol K
 
We know,
 
Equilibrium constant k =
 
straight k subscript straight p space equals space straight e to the power of bevelled fraction numerator negative increment straight G to the power of 0 over denominator RT end fraction end exponent

space space space space space space equals space straight e to the power of negative bevelled fraction numerator open parentheses negative 8100 close parentheses over denominator 8.314 cross times 1000 end fraction end exponent

straight k subscript straight p space space equals space 2.649 space 
Answered by Varsha | 27 Mar, 2019, 01:04: PM
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