(A) The entropy change for a phase transition at constant temperature and pressure is given by the formula: $\Delta S = \frac{\Delta H_{vap}}{T}$.Give

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

(A) The entropy change for a phase transition at constant temperature and pressure is given by the formula: $\Delta S = \frac{\Delta H_{vap}}{T}$.Given,$\Delta H_{vap} = 37.3 \ kJ \ mol^{-1} = 37300 \ J \ mol^{-1}$ and $T = 373 \ K$.Substituting the values: $\Delta S = \frac{37300 \ J \ mol^{-1}}{373 \ K} = 100 \ J \ mol^{-1} \ K^{-1}$.

Class 11 Chemistry Thermodynamics 2 nd Law of thermodynamics and Entropy

Medium

The enthalpy change for the transition of liquid water to steam is $37.3 \ kJ \ mol^{-1}$ at $373 \ K$. Find $\Delta S$ in $J \ mol^{-1} \ K^{-1}$.

A
$100$
B
$10$
C
$1000$
D
None of the above

Explore More

Browse All

Question Bank

All Subjects

Class 11 Questions

Class 11

Chemistry Questions

Chapter

Thermodynamics

Subtopic

2 nd Law of thermodynamics and Entropy

When a liquid boils,there is

Easy

View Solution

At the boiling point of water,$900 \ J/g$ of heat is exchanged. What is the increase in entropy in $J \ K^{-1} \ mol^{-1}$?

Medium

View Solution

Given that $\Delta H = 0$ for the mixing of two gases,explain whether the diffusion of these gases into each other in a closed container is a spontaneous process or not?

Easy

View Solution

Match the following processes with their corresponding entropy changes:
$a$. Liquid to vapor conversion $1$. $\Delta S = 0$
$b$. Reaction not spontaneous at any temperature,$\Delta H = (+)$ $2$. $\Delta S = (+)$
$c$. Reversible expansion of an ideal gas $3$. $\Delta S = (-)$

Medium

View Solution

Which of the following statements is correct?

EasyWBJEE 2012

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

$a$. Liquid to vapor conversion	$1$. $\Delta S = 0$
$b$. Reaction not spontaneous at any temperature,$\Delta H = (+)$	$2$. $\Delta S = (+)$
$c$. Reversible expansion of an ideal gas	$3$. $\Delta S = (-)$

The enthalpy change for the transition of liquid water to steam is $37.3 \ kJ \ mol^{-1}$ at $373 \ K$. Find $\Delta S$ in $J \ mol^{-1} \ K^{-1}$.

Similar Questions

When a liquid boils,there is

At the boiling point of water,$900 \ J/g$ of heat is exchanged. What is the increase in entropy in $J \ K^{-1} \ mol^{-1}$?

Given that $\Delta H = 0$ for the mixing of two gases,explain whether the diffusion of these gases into each other in a closed container is a spontaneous process or not?

Match the following processes with their corresponding entropy changes:$a$. Liquid to vapor conversion$1$. $\Delta S = 0$$b$. Reaction not spontaneous at any temperature,$\Delta H = (+)$$2$. $\Delta S = (+)$$c$. Reversible expansion of an ideal gas$3$. $\Delta S = (-)$

Which of the following statements is correct?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Match the following processes with their corresponding entropy changes:
$a$. Liquid to vapor conversion $1$. $\Delta S = 0$
$b$. Reaction not spontaneous at any temperature,$\Delta H = (+)$ $2$. $\Delta S = (+)$
$c$. Reversible expansion of an ideal gas $3$. $\Delta S = (-)$