Question

Phosphorus pentachloride decomposes according to the chemical equation

PCl5(g) <---> PCl3(g) + Cl2(g) Kc= 1.80 at 250°C

A 0.314 mol sample of PCl5(g) is injected into an empty 3.45 L reaction vessel held at 250 °C. Calculate the concentrations of PCl5(g) and PCl3(g) at equilibrium.

[PCl5]= ? M

[PCl3]= ? M

Answer 1

meles Velume (L) concentration - Nolu me e gas Vshime al venel \/6lume vessel 3.45L 0.314 mo hifial cuncenha thon a Pels 19) 0.0910 M 3.4sL Let PCts) equilibnum concenhatun o Pcls= equillibnum coneen hation e Pels e2uillibnom concenhaton e cl [Pels] [,J 1E Table (oncentation (M) Pcls1g) PCI3 (9) + Cla1g) Kc 1.20 I 0.091 - X 0.091-x 1-80 Yxx CPCIS Oc091-X0 180r -0.163 0 SolNin this guodvn tre eguahion, eue get value o Hese q1 b t b- 180 C-O.1638 0.687 M At euillibnum CPCls 0.091 - = 0.091-0.087 - 0.004 M CPcls-0.004 M C PCl3 3 00081 N Please Rate