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?
- The reaction goes to completion at equilibrium
- The forward reaction is exothermic
- At equilibrium increase in temperature favours the reverse reaction
-
Pressure has no effect on the equilibrium mixture
The correct answer is: D
Explanation
The total number of moles of gaseous substances on the LHS = The total number of moles of gaseous product on the RHS.
1 + 1 = 2
2 = 2
Therefore, pressure has no effect on the system in equilibrium.