Which of the following processes will never be a spontaneous process?

  • A
    $2O_3 \rightarrow 3O_2, \Delta H = \text{negative}, \Delta S = \text{positive}$
  • B
    $Mg + H_2 \rightarrow MgH_2, \Delta H = \text{negative}, \Delta S = \text{negative}$
  • C
    $Br_2(l) \rightarrow Br_2(g), \Delta H = \text{positive}, \Delta S = \text{positive}$
  • D
    $2Ag + 3N_2 \rightarrow 2AgN_3, \Delta H = \text{positive}, \Delta S = \text{negative}$

Explore More

Similar Questions

For the reaction $H_2O_{(l)} \rightleftharpoons H_2O_{(g)}$ at $373 \ K$ and $1 \ atm$ pressure,which of the following is true?

An ideal gas expands from an initial volume of $5 \text{ dm}^3$ to $15 \text{ dm}^3$ against a constant external pressure of $2 \text{ atm}$. What is the work done by the gas (in $\text{ J}$)?

$A$ process is taking place at constant temperature and pressure. Then

For a certain reaction, $\Delta H^{\circ} = 40 \text{ kJ}$ and $\Delta S^{\circ} = 80 \text{ JK}^{-1}$. Find the temperature at which $\Delta G^{\circ} = 0$. (in $\text{ K}$)

$A$ reaction,$A + B \rightarrow C + D + q$,is found to have a positive entropy change. The reaction will be:

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