Phosphorus Pentachloride Decomposes to Phosphorus Trichloride at High Temperatures According

question 123

Multiple Choice

Phosphorus pentachloride decomposes to phosphorus trichloride at high temperatures according to the reaction: PCl₅(g) ⇌ PCl₃(g) + Cl₂(g)
At 250°C,0.250 M PCl₅ is added to a flask.If K_c = 1.80,what are the equilibrium concentrations of each gas?

• A)[PCl₅] = 0.0280 M,[PCl₃] = 0.222 M,[Cl₂] = 0.222 M
• B)[PCl₅] = 1.25 M,[PCl₃] = 0.474 M,[Cl₂] = 0.474 M
• C)[PCl₅] = 1.80 M,[PCl₃] = 1.80 M,[Cl₂] = 1.80 M
• D)[PCl₅] = 2.27 M,[PCl₃] = 2.02 M,[Cl₂] = 2.02 M

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