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If 900 J/g of heat is exchanged at boiling point of water, then what is increase in entropy
Options
(a) 900 J/mol
(b) 87.2 J/mol
(c) 43.4 J/mol
(d) Zero
Correct Answer:
43.4 J/mol
Explanation:
Heat exchanged at boiling point of water
= 900 J/g = 900 x 18 J/mol = 16200.0 J/mol.
ΔS(vap) = ΔH(vap) / T(b) = 16200/ 373 ( therefore T(b) = 273 + 100 = 373 K)
= 43.4 J/mol.
Related Questions: - The work done during the expansion of a gas from a volume of 4 dm³ to 6 dm³
- Which of the following paramagnetic
- Be²⁺ is isoelectronic with which of the following ions?
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Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The work done during the expansion of a gas from a volume of 4 dm³ to 6 dm³
- Which of the following paramagnetic
- Be²⁺ is isoelectronic with which of the following ions?
- Which of the following can not be hydrolysed into aldose and ketose
- Vapour density of a gas is 22. What is its molecular weight
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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