At a certain temperature, SO2Cl2 decomposes into SO2 and Cl2 as shown below. SO2Cl2(g) ⇌ SO2(g) + Cl — Equilibrium Chemistry Question

At a certain temperature, SO₂Cl₂ decomposes into SO₂ and Cl₂ as shown below.
SO₂Cl₂(g) ⇌ SO₂(g) + Cl₂(g) Kp = 0.50
An equal number of moles of SO₂Cl₂, SO₂, and Ar are introduced into a sealed flask to give a total pressure of 1.80 bar. The flask is maintained at the same temperature until equilibrium is attained. What is the final pressure of Cl₂(g)?