The Reaction Quotient Video Lessons

Example

# Problem: Antimony pentachloride decomposes according to this equation:SbCl5(g) ⇌ SbCl3(g) + Cl2(g)An equilibrium mixture in a 5.00-L flask at 448 °C contains 3.85 g of SbCl  5, 9.14 g of SbCl 3, and 2.84 g of Cl2. How many grams of each will be found if the mixture is transferred into a 2.00-L flask at the same temperature?

###### FREE Expert Solution

SbCl5(g) ⇌ SbCl3(g) + Cl2(g)

Calculate the concentration of each at equilibrium:

molar mass SbCl5 = 299.01 g/mol

[SbCl5] = 2.575x10-3 M

molar mass SbCl3 = 228.11 g/mol

[SbCl3] = 8.0137x10-3 M

molar mass Cl2 = 70.9 g/mol

[Cl2] = 8.0113x10-3 M

Calculate the equilibrium constant, K:

###### Problem Details

Antimony pentachloride decomposes according to this equation:
SbCl5(g) ⇌ SbCl3(g) + Cl2(g)
An equilibrium mixture in a 5.00-L flask at 448 °C contains 3.85 g of SbCl  5, 9.14 g of SbCl 3, and 2.84 g of Cl2. How many grams of each will be found if the mixture is transferred into a 2.00-L flask at the same temperature?