For a reaction taking place in a container in equilibrium with its surroundings, the effect of temperature on its equilibrium constant $\mathrm{K}$ in terms of change in entropy is described by:

• A

  with increase in temperature, the value of $\mathrm{K}$ for exothermic reaction decreases because the entropy change of the system is positive.
• Correct answer
  B

  with increase in temperature, the value of $\mathrm{K}$ for endothermic reaction increases because unfavourable change in entropy of the surroundings decreases.
• Correct answer
  C

  with increase in temperature, the value of $\mathrm{K}$ for exothermic reaction decreases because favourable change in entropy of the surroundings decreases.
• D

  with increase in temperature, the value of $\mathrm{K}$ for endothermic reaction increases because the entropy change of the system is negative.

Hence, the correct answer is options: 'B', 'C'.