Can you solve this showing all steps clearly 30 What is the

Can you solve this showing all steps clearly?

30) What is the value for Kc for the following reaction: PbCl2(s)-m2+(ag) + 2 CI-(ag), if PbCl2(s) = 1.50 grams, Pb2+] = 1.6 x 10-2 M and [CP] = 3.2 x 10-2 M at equilibrium? (The molar mass of PbCl2(s) is 278 g/mol and its density is 5.85 g/cm3.) A) 7.6 x 10-7 B) 1.6 x 10-5 C) 6.2 x 104 D) 1.3 x 106

Solution

The equilibrium reaction is given as

PbCl₂ (s) <======> Pb²⁺ (aq) + 2 Cl^- (aq)

The equilibrium constant is expressed as

K_C = [Pb²⁺][Cl^-]² (the concentrations of aqueous or gaseous species are included in the equilibrium constant expression).

Given that, at equilibrium, [Pb²⁺] = 1.6*10^-2 M and [Cl^-] = 3.2*10^-2 M, plug in values and obtain

K_C = (1.6*10^-2)*(3.2*10^-2)² = 1.6384*10^-5 1.6*10^-5

(Equilibrium constant is dimensionless).

(B) is the correct answer.