Pure SO2Cl2(g) is introduced into a rigid 1.0\,L container at 320\,K to an initial pressure of 0.50\,atm. The system reaches equilibrium according to SO2Cl2(g)⇌SO2(g)+Cl2(g), and the total pressure rises to 0.58\,atm. If Kp=0.015 at 320\,K, what is the equilibrium partial pressure of Cl2(g)?
a) 0.10atm
b) 0.08atm
c) 0.06atm
d) 0.04atm