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Chemical Equilibrium question

2006 · Q120
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Chemical Equilibrium question

2006 · Q120

NEETChemistryChemical EquilibriumMCQ+4 / −1
For the reaction :
CH4(g) + 2O2(g) ⇌\rightleftharpoons⇌ CO2(g) + 2H2O(l),
Δ\DeltaΔHr = −-− 170.8 kJ mol−-−1.
Which of the following statements is not true?
  1. A
    The reaction is exothermic.
  2. B
    At equilibrium, the concentrations of CO2(g) and H2O(l) are not equal.
  3. C
    The equilibrium constant for the reaction is given by Kp = [CO2][CH4][O2]{{\left[ {C{O_2}} \right]} \over {\left[ {C{H_4}} \right]\left[ {{O_2}} \right]}}[CH4​][O2​][CO2​]​
  4. D
    Addition of CH4(g) or O2(g) at equilibrium will cause a shift to the right.
View written solutionFree

Correct answer: C

Option C is incorrect as the value of KP given is wrong. It should have been

KP = PCO2PCH4×[PO2]2{{{P_{C{O_2}}}} \over {{P_{C{H_4}}} \times {{\left[ {{P_{{O_2}}}} \right]}^2}}}PCH4​​×[PO2​​]2PCO2​​​

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