At the industrial decomposition of calcium carbonate is represented in two overall steps

CHEMISTRY · Multi-part · A Level · Chemistry · Thermodynamics · Thermodynamics

Problem

298\,\text{K}

the industrial decomposition of calcium carbonate is represented in two overall steps. Step 1:

\mathrm{CaCO_3}(s) \rightarrow \mathrm{CaO}(s) + \mathrm{CO_2}(g)

Step 2:

\mathrm{CaO}(s) + \mathrm{H_2O}(l) \rightarrow \mathrm{Ca(OH)_2}(s)

(a) Calculation of

\Delta n_{\text{gas}}

for each step (b) Determination and explanation of the sign of

\Delta S^\circ

for each step (c) Identification of the temperature-sensitive step with justification