Question

Pb(NO3)2 + CuSO4 = Cu(NO3)2 + PbSO4 What is the reaction quotient for this?

Answer 1

`Q=\frac {[Cu(NO_3)_2][PbSO_4]}{[Pb(NO_3)_2][CuSO_4]}`

Step-by-step explanation:

The reaction quotient of an equilibrium reaction measures relative amounts of the products and the reactants present during the course of the reaction at particular point in the time.

It is the ratio of the concentration of the products and the reactants each raised to their stoichiometric coefficients. The conecntration of the liquid and the gaseous species does not change and thus is not written in the expression.

Thus, for the reaction:

`Pb(NO_3)_2+CuSO_4\rightleftharpoons Cu(NO_3)_2+PbSO_4`

The expression is:

`Q=\frac {[Cu(NO_3)_2][PbSO_4]}{[Pb(NO_3)_2][CuSO_4]}`