Consider the following system at equilibrium where delta H degree = -18.8 kJ, an

Question

Consider the following system at equilibrium where delta H degree = -18.8 kJ, and K_c = 10.5 at 350 K. 2CH_2Cl_2(g) CH_4(g) + CCl_4(g) If the VOLUME of the equilibrium system is suddenly decreased at constant temperature: The value of K_c A. increases B. decreases. C. remains the same The value of Q_c A. is greater than K_c. B. is equal to K_c. C. is less than K_c. The reaction must A run in the forward direction to reestablish equilibrium B. run in the reverse direction to reestablish equilibrium C. remain the same. It is already at equilibrium The number of moles of Cl_2 will A increase B. decrease C remain the same

Explanation / Answer

According to Lechatlier's no effect of pressure and volume on equilibrium reactions in which number of gaseous reactant moles equals to number of gaseous product moles.

So,

Kc remains the same

Qc equals to Kc

The reaction must remain the same. It is already at equilibrium.

The number of moles of CCl4 remains the same

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