Question

The equation for the reaction between silver chloride and aqueous ammonia is shown
AgCl(s) + 2NH3(aq) = [Ag(NH3)2]*(aq) + Cl(aq)

What are the units of Kc for this reaction?

A. no units
B. mol-'dm3
C. mol dm-3
D. mol2dm-6

Answer 1

the unit of Kc for this reaction?

C. mol dm-3

Answer 2

Given info : The equation for the reaction between silver chloride and aqueous ammonia is shown..

AgCl(s) + 2NH3(aq) = [Ag(NH3)2]*(aq) + Cl(aq)

To find : the units of Kc for the above reaction is..

solution : Equilibrium constant, Kc = [Cl] [Ag(NH3)2]/[NH3]²

[ concentration of solid is considered 1. so [AgCl] = 1, ]

we know, concentration unit is mol/Litre

so, units of Kc = (mol/litre)(mol/litre)/(mol/litre)²

= 1

( we are getting numerical value only it means Kc of the above reaction is unitless. )

Therefore the correct option is (A) no unit.