The following are some statements about units of K_c and K_p.

A) K_p has always units.

B) K_c has no units at all times.

C) If $\mathrm{\Delta n}$= o, then K_p and K_c have no units.

The correct set is

Unit of K_P(atm)^Δn (or) (mm)^Δn

Unit of K_P(mole/lit)^Δn

When Δn = 0, K_P = K_C and both K_C and K_P do not have units.

A) K_P has always units - false

     B) K_C has no units at all times - false

     C) If Δn = 0, K_P & K_C have no units - True

Only 'C' is correct.