Equilibrium Practice questions

# Equilibrium Practice questions - 1.State the equilibrium...

This preview shows pages 1–2. Sign up to view the full content.

1. State the equilibrium expressions for the following reactions. (a) CO (g) + H 2 O (g) CO 2(g) + H 2(g) (b) 3I 2(g) + 6F 2(g) 2IF 5(g) + I 4 F 2(g) 2. The equilibrium constant for the synthesis of HBr (g) from hydrogen and bromine gas is 2.18 × 10 6 at 730 ° C. H 2(g) + Br 2(g) HBr (g) If 3.75 mol of HBr is put into a 15.0 L reaction vessel, calculate the concentration of H 2 , Br 2 , and HBr at equilibrium. 3. The K c for the reaction 2HF (g) H 2(g) + F 2(g) is 4.0. Predict the direction in which the equilibrium will shift if 3.0 mol of HF, 2.0 mol of H 2 and 4.0 mol of F 2 are put into a 5.0 L bulb. 4. At 250 ° C, the equilibrium constant for the reaction PCl 5(g) PCl 3(g) + Cl 2(g) is 0.041. The reaction is also endothermic, H = 92.5 kJ. (a) Calculate the concentration of all the substances present at equilibrium if 0.20 mol of PCl 5 is placed in a 4 L reaction vessel. (b) Predict the shift in equilibrium expected when • the temperature of the reaction mixture is increased • PCl 3 is removed from the system

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 07/06/2011 for the course SCH 4U taught by Professor White during the Spring '10 term at Beacon FL.

### Page1 / 3

Equilibrium Practice questions - 1.State the equilibrium...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online