Answer:

1. The expression of the reaction quotient, Q, is obtained by substituting the concentrations (or pressures) of the reactants and products into the balanced chemical equation for the reaction, similar to how you would write the expression for the equilibrium constant.

2. The direction of the reaction can be determined based on the comparison of the reaction quotient (Q) with the equilibrium constant (K). If Q is greater than K, the reaction proceeds in the reverse direction. If Q is less than K, the reaction proceeds in the forward direction. If Q is equal to K, the reaction is at equilibrium.

3. The reaction quotient (Q) is calculated at any point during a reaction, while the equilibrium constant (K) is a constant value at a specific temperature once the reaction has reached equilibrium. Q helps determine the direction the reaction is currently proceeding, whereas K represents the relative concentrations of reactants and products at equilibrium.

Explanation:

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