If 900 J/g of heat is exchanged at boiling point of water, then what is increase

⇦

⇨

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:

1. Hydrolytic reaction of fats, with caustic soda, is known as
2. How many moles of iodine are liberated when 1 mole of potassium dichromate
3. In TeCl₄, the central atom tellurium involves
4. Which of the following is formed, when benzaldehyde reacts with alcoholic KCN
5. Which one of the following statements about the nitro group in organic compound

Topics: Thermodynamics (179)
Subject: Chemistry (2512)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends