Homework Answers
According to Le Chatelier principle, a system at equilibrium when disturbed by an external agency will proceed in a direction in such a way to negate the disturbance to re-establish the equilibrium.
1. b. Left
Reaction will proceed in the direction in which I2 is produced, which is to the left.
2. A. Right
The excess H2 has to be consumed to attain equilibrium. So if reaction goes to right H2 will be consumed.
3. B. Left
Excess HI will be consumed if the reaction moves to the left.
4. B. Left
5. C. Neither
Increase in total pressure at constant volume will have no effect on the equilibrium.
6. B. Left
The reaction will move towards the direction in which heat is produced. Since heat is being produced when reaction goes to left it will be favored if temperature is decreased.
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35) Given the equilibrium reaction at constant pressure: 2HBr(g) + 72.7 kJ = H2(g) + Br2(g) When the temperature is increased, the equilibrium will shift to the A) left, and the concentration of HBr(g) will decrease B) right, and the concentration of HBr(g) will decrease C) right, and the concentration of HBr(g) will increase D) left, and the concentration of HBr(g) will increase
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