Waec Chemistry Past Questions For Year 2001
Question 51
What will happen if more heat is applied to the following system at equilibrium? X2(g) + 3Y 2(g) ⇌ 2XY3(g); ∆H =-kJmol -1
- A. the yield of XY 3 will decompose
- B. more of XY3 will decompose
- C. More of X2 will react
- D. the forward reaction will go to completion
Question 52
A reaction is represented by the equation below. A2(g) + B2(g) 2AB(g); ∆H = +X kJmol-1 Which of the following statements about the system is correct?
- A. The reaction goes to completion at equilibrium
- B. The forward reaction is exthermic
- C. At equilibrium increase in temperature favours the reverse reaction
- D. Pressure has no effect on the equilibrium mixture
