KCET · Chemistry · Thermodynamics (C)
Identify the incorrect statements among the following:
(a) All enthalpies of fusion are positive
(b) The magnitude of enthalpy change does not depend on the strength of the intermolecular interactions in the substance undergoing phase transformations.
(c) When a chemical reaction is reversed, the value of \(\Delta \mathrm{rH}^{\circ}\) is reversed in sign.
(d) The change in enthalpy is dependent of path between initial state (reactants) and final state (products)
(e) For most of the ionic compounds, \(\Delta_{\text {sol }} \mathrm{H}^{\circ}\) is negative
- A \(a, b\) and \(d\)
- B \(\mathrm{b}, \mathrm{d}\) and e
- C \(\mathrm{a}, \mathrm{d}\) and e
- D a and e only
Answer & Solution
Correct Answer
(B) \(\mathrm{b}, \mathrm{d}\) and e
Step-by-step Solution
Detailed explanation
(a) Fusion is endothermic \(\rightarrow\) correct
(b) It depends \(\rightarrow\) Incorrect
(c) Correct
(d) Incorrect
(e) Incorrect
(b) It depends \(\rightarrow\) Incorrect
(c) Correct
(d) Incorrect
(e) Incorrect
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