Chemical Thermodynamics · JEE Main previous year questions

2014 1 question

1. Q632014 · 6 Apr 2014 · Shift 1

   For complete combustion of ethanol, ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}(\mathrm{l})+3{\mathrm{O}}_2(\mathrm{g})\to 2\mathrm{C}{\mathrm{O}}_2(\mathrm{g})+3{\mathrm{H}}_2\mathrm{O}(\mathrm{l})$ the amount of heat produced as measured in bomb calorimeter, is $1364.47\mathrm{kJ}\mathrm{mo}{\mathrm{l}}^{-1}$ at $25^{\circ }\mathrm{C}$. Assuming ideality the Enthalpy of combustion, ${\Delta }_{C}H$, for the reaction will be : ($R=8.314\mathrm{J}{\mathrm{K}}^{-1}\mathrm{mo}{\mathrm{l}}^{-1}$)

   1. A.$-1460.50\mathrm{kJ}\mathrm{mo}{\mathrm{l}}^{-1}$
   2. B.$-1350.50\mathrm{kJ}\mathrm{mo}{\mathrm{l}}^{-1}$
   3. C.$-1366.95\mathrm{kJ}\mathrm{mo}{\mathrm{l}}^{-1}$
   4. D.$-1361.95\mathrm{kJ}\mathrm{mo}{\mathrm{l}}^{-1}$
   Show answer

   Answer: C