The equilibrium constants for the reaction Br2 =2 Br at 500K and 700 K are 10^-10 and 10^-5 The - Chemistry - Equilibrium

Question

The equilibrium constants for the reaction Br2 =2 Br at 500K and
700 K are 10^-10 and 10^-5 The reaction is? Answer is endothermic
but in the option one is slow but given incorrect Why isn't the
reaction slow?

Geetha · Accepted Answer

Br2 ↔2 BrKC = [Br]2[Br2] Kc at 500K and 700k are 1×10-10 and 1×10-5 and it indicates that the formation of Br is favoured with increase in temperature
 So the reaction is endothermic
With the increae in temperature, the decomposiition is favoured, soits not a slow reaction

The equilibrium constants for the reaction Br2 =2 Br at 500K and 700 K are 10^-10 and 10^-5. The reaction is? Answer is endothermic but in the option one is slow but given incorrect. Why isn't the reaction slow?