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NEET2006ChemistryChemical EquilibriumActual

For the reaction: CH _ 4(g) +2 O _ 2(g) CO _ 2(g) +2 H ₂ O (l) H _r=-170.8 ~kJ ~mol ⁻¹ . Which of the following statements is not true?

Options

  1. AThe reaction is exothermic
  2. BAt equilibrium, the concentrations of CO _ 2(g) and H ₂ O _ (h) are not equal
  3. CThe equilibrium constant for the reaction is given by K _p= [ CO ₂ ] [ CH ₄ ] [ O ₂ ]
  4. DAddition of CH _ 4(g) or O _ 2(g) at equilibrium will cause a shift to the right

Correct answer

C. The equilibrium constant for the reaction is given by K _p= [ CO ₂ ] [ CH ₄ ] [ O ₂ ]

Step-by-step solution

For the reaction, gathered CH _ 4( ~g ) +2 O _ 2( ~g ) CO _ 2( ~g ) +2 H ₂ O _ ( I ) H _r=-170.8 ~kJ ~mol ⁻¹ gathered From the above reaction, K _c= [ CO ₂ ] [ CH ₄ ] [ O ₂ ]^2 K _p= P _ CO ₂ P _ CH ₄ P _ O ₂^2 So, K _p= [ CO ₂ ] [ CH ₄ ] [ O ₂ ]^2 is incorrect.

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