10. Calculate the enthalpy change on freezing of 1.0 mol of water at 10.0°C to ice at -10.0°C. A, ΔfusH = 6.03 KJ mol-1 at 0°C.
Cp [H2O(l)] = 75.3 J mol-1 K-1;
Cp [H2O(s)] = 36.8 J mol-1 K-1.
10. Calculate the enthalpy change on freezing of 1.0 mol of water at 10.0°C to ice at -10.0°C. A, ΔfusH = 6.03 KJ mol-1 at 0°C.
Cp [H2O(l)] = 75.3 J mol-1 K-1;
Cp [H2O(s)] = 36.8 J mol-1 K-1.
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1 Answer
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10. Total enthalpy change involved in the transformation is the sum of the following changes:
(i) Energy change involved in the transformation of 1 mol of water at 10°C to 1 mol of water at 0°C
ΔH= Cp [H2O (l)] ΔT
(ii) Energy change involved in the transformation of 1 mol of water at 10°C to 1 mol of ice at 0°C
ΔHfreezing
(iii) Energy change involved in the transformation of 1 mol of ice at 10°C to 1 mol of ice at 0°C
&n
...more
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