When 1 kg of ice at 0⁰C melts to water at 0⁰C, the resulting change in its entropy

⇦

⇨

When 1 kg of ice at 0⁰C melts to water at 0⁰C, the resulting change in its entropy, taking latent heat of ice to be 80 cal/⁰C, is

Options

(a) 273 cal/K
(b) 8 x 104 cal/K
(c) 80 cal/K
(d) 293 cal/K

Correct Answer:

293 cal/K

Explanation:

Change in entropy is given by
dS = dQ / T or ∆S = ∆Q / T = mLf / 273
∆S = 1000 x 80 / 273 = 293cal / K

Related Questions:

1. In the reaction ₁²H+₁³H+₂⁴He+₀¹n, if the binding energies of ₁²H,₁³H and ₂⁴He
2. Pure Si at 500 K has equal number of electron (nₑ) and hole (nₕ) concentrations
3. The power obtained in a reactor using U²³⁵ disintegration is 1000 kW
4. A and B are two vectors and θ is the angle between them ,if |A x B|=√3(A.B),the value of θ
5. Alternating current is transmitted to distant places at

Topics: Thermodynamics (179)
Subject: Physics (2479)

---

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