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Formation of a solution from two components can be considered as: (i) Pure solvent → separated solvent molecules Δ H_1 (ii) Pure solute → separated…

NEET UG 2003 — Chemistry Physical Chemistry

2003mcqeasy

Formation of a solution from two components can be considered as: (i) Pure solvent →\rightarrow→ separated solvent molecules ΔH1\Delta \mathrm{H}_1ΔH1​ (ii) Pure solute →\rightarrow→ separated solute molecules, ΔH2\Delta \mathrm{H}_2ΔH2​ (iii) Separated solvent and solute molecules →\rightarrow→ solution, ΔH3\Delta \mathrm{H}_3ΔH3​ Solution so formed will be ideal of:

Official previous-year question

Held on 30 Apr 2003 · Verified 9 Jul 2026.

Options

  1. A

    ΔHsoln =ΔH1+ΔH2+ΔH3\Delta \mathrm{H}_{\text {soln }}=\Delta \mathrm{H}_1+\Delta \mathrm{H}_2+\Delta \mathrm{H}_3ΔHsoln ​=ΔH1​+ΔH2​+ΔH3​

  2. B

    ΔHsoln =ΔH1+ΔH2−ΔH3\Delta \mathrm{H}_{\text {soln }}=\Delta \mathrm{H}_1+\Delta \mathrm{H}_2-\Delta \mathrm{H}_3ΔHsoln ​=ΔH1​+ΔH2​−ΔH3​

  3. C

    ΔHsoln =ΔH1−ΔH2−ΔH3\Delta \mathrm{H}_{\text {soln }}=\Delta \mathrm{H}_1-\Delta \mathrm{H}_2-\Delta \mathrm{H}_3ΔHsoln ​=ΔH1​−ΔH2​−ΔH3​

  4. D

    AHsoln =AH3−AH1−AH2\mathrm{AH}_{\text {soln }}=\mathrm{AH}_3-\mathrm{AH}_1-\mathrm{AH}_2AHsoln ​=AH3​−AH1​−AH2​

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