During the melting of an ice slab at 273 K a | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) When ice melts into water at $273 \ K$,the density of water is greater than that of ice,which means the volume of the system decreases $(dV < 0)$.

Vedclass · Accepted Answer

The internal energy of the ice-water system increases.

Vedclass · Answer

(C) When ice melts into water at $273 \ K$,the density of water is greater than that of ice,which means the volume of the system decreases $(dV Since work done $W = P \Delta V$,and $\Delta V$ is negative,the work done by the system on the atmosphere is negative (or work is done on the system by the atmosphere).Therefore,option $(b)$ is incorrect.During the phase change,heat is absorbed by the system from the surroundings,which increases the internal energy of the system.Thus,only statement $(c)$ is correct.

During the melting of an ice slab at $273 \ K$ and $1 \ atm$ pressure:

Similar Questions

What is the amount of work done when $0.5 \ mol$ of methane,$CH_{4(g)}$,is subjected to combustion at $300 \ K$? (Given: $R = 8.314 \ J \ K^{-1} \ mol^{-1}$)

$A$ system receives $224 \ J$ of heat and does $156 \ J$ of work. Calculate the change in internal energy. (in $J$)

$\Delta U$ is equal to

For the gaseous reaction $A_{(g)} + 3B_{(g)} \rightarrow 3C_{(g)} + 3D_{(g)}$,the value of $\Delta U = 17 \, Kcal$ at $27 \, ^oC$. Assuming $R = 2 \, cal \, K^{-1} \, mol^{-1}$,the value of $\Delta H$ for the above reaction will be ....... $Kcal$.

Which of the following is the correct mathematical expression for the first law of thermodynamics?

Vedclass Test Series

Exam Paper Generator

Online Exam Module