Chemical & Ionic Equilibrium · JEE Main previous year questions

2015 2 questions

1. Q652015 · 4 Apr 2015 · Shift 1

   The following reaction is performed at $298\mathrm{K}$ $2\mathrm{NO}(\mathrm{g})+{\mathrm{O}}_2(\mathrm{g})\rightleftharpoons 2\mathrm{N}{\mathrm{O}}_2(\mathrm{g})$ The standard free energy of formation of $\mathrm{NO}(\mathrm{g})$ is $86.6kJ/mol$ at $298\mathrm{K}$. What is the standard free energy of formation of $\mathrm{N}{\mathrm{O}}_2(\mathrm{g})$ at $298\mathrm{K}$? (${\mathrm{K}}_{\mathrm{p}}=1.6\times 10^{12}$)

   1. A.$86600+R(298)\ln (1.6\times 10^{12})$
   2. B.$86600-\frac{\ln (1.6\times 10^{12})}{R(298)}$
   3. C.$0.5[2\times 86,600-R(298)\ln (1.6\times 10^{12})]$
   4. D.$R(298)\ln (1.6\times 10^{12})-86600$
   Show answer

   Answer: C

2. Q812015 · 4 Apr 2015 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
   Show answer

   Answer: A