# Problem: The equilibrium constant Kc = 49 for the reaction: PCl3 (g) + Cl2 (g) ⇌ PCl5 (g) at 230 °C. If 0.70 mol of PCl3 is added to 0.70 mol of Cl2 in a 1.00-L reaction vessel at 230 °C, what is the concentration of PCl3 when equilibrium has been established? a. 0.59 M b. 0.30 M c. 0.11 M d. 0.83 M

83% (67 ratings)
83% (67 ratings)
###### Problem Details

The equilibrium constant Kc = 49 for the reaction: PCl3 (g) + Cl2 (g) ⇌ PCl5 (g)

at 230 °C. If 0.70 mol of PCl3 is added to 0.70 mol of Cl2 in a 1.00-L reaction vessel at 230 °C, what is the concentration of PCl3 when equilibrium has been established?

a. 0.59 M

b. 0.30 M

c. 0.11 M

d. 0.83 M

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the ICE Chart concept. You can view video lessons to learn ICE Chart Or if you need more ICE Chart practice, you can also practice ICE Chart practice problems .

What is the difficulty of this problem?

Our tutors rated the difficulty of The equilibrium constant Kc = 49 for the reaction: PCl3 (g) ... as high difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Dasha took 11 minutes to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Bindell's class at UCF.