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At 298 K the enthalpy of formation of liquid water is -285.9 kJ/mol and that of steam -242.8 kJ/mol. The enthalpy of vapourisation of water is
Options
(a) 43.1 kJ/mol
(b) -43.1 kJ/mol
(c) 242.8 kJ/mol
(d) -242.8 kJ/mol
Correct Answer:
43.1 kJ/mol
Explanation:
ΔH(vap) = -242.8 – (-285.9) = 43.1 kJ/mol.
Related Questions: - Specific conductance of 0.1 M sodium chloride solution is 1.06 ˣ 10⁻²
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Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Specific conductance of 0.1 M sodium chloride solution is 1.06 ˣ 10⁻²
- What is the [OH⁻] in the final solution prepared by mixing 20 mL of 0.05 M Hcl
- The diagonal partner of element B is
- In which of the following hydrocarbons, hydrogen is most acidic
- The s-block element used as a catalyst in the manufacture of Buna-S rubber is
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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