CAIE A-Level Chemistry A2 M 3 Graphs Proportionality Gradients and Intercepts Topic Practice

Calcium carbonate decomposes on heating.

Table 4.1 shows the values of the Gibbs free energy change, $\Delta G^{\ominus}$, for this reaction at various temperatures.

Assume the standard enthalpy change, $\Delta H^{\ominus}$, and the standard entropy change, $\Delta S^{\ominus}$, for this reaction remain constant over this temperature range.

Use the data in Table 4.1 to plot a graph of $\Delta G^{\ominus}$ against T on the grid.