Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Standard entropies of X2, Y2 and XY3 are 60, 40 and 50 JK-1mol-1 respectively. For

Standard entropies of X2, Y2 and XY3 are 60, 40 and 50 JK-1mol-1 respectively. For the reaction \frac{1}{2}\text{X}_{2}+\frac{3}{2}\text{Y}_{2}\rightleftharpoons \text{XY}_{3},\Delta\text{H}=-30\text{kJ} to be at equilibrium, the temperature should be

Option: 1

500 K


Option: 2

750 K


Option: 3

1000 K


Option: 4

1250 K


Answers (1)

best_answer

\frac{1}{2}x_{2}+\frac{3}{2}1/2\rightleftharpoons x1/3\, \, \, \, \Delta H=-30kj

\Delta s_{reaction}=\sum \Delta s_{product}-\sum \Delta s_{reactant}

\Delta s_{reaction}=50-\left ( \frac{1}{2}\times 60+\frac{3}{2} \times 40\right )Jk^{-1} mol^{-1}

=50-\left ( 30+60 \right )=-40Jk^{-1}mol^{-1}

\Delta G=\Delta H-T\Delta S=0

\Delta H=T\Delta S

-30=T\times \frac{-40}{1000}\, \, \, \, \, T=750k

Option (2) is correct answer.

Posted by

Devendra Khairwa

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

NEET aspirant from Jammu-Kashmir hangs self in Kota
anam-khan

NEET 2025 Answer key Live: NTA NEET UG answer key soon at neet.nta.nic.in; result date, MBBS cutoff
anam-khan

NEET MBBS cut-off for OBC category in top 20 government medical colleges

Latest Question