Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
BITSAT2014ChemistryThermodynamics (C)Actual

The enthalpy of sublimation of aluminium is 330 kJ / mol . Its Ist, II ^ nd and III ^ rd ionization enthalpies are 580,1820 and 2740 ~kJ respectively. How much heat has too be supplied (in kJ ) to convert 13.5 ~g of aluminium into Al ³⁺ ions and electrons at 298 k

Options

  1. A5470
  2. B2735
  3. C4105
  4. D3765

Correct answer

B. 2735

Step-by-step solution

Heat needed too be supplied per m o l=330+580+1820+2740 =5470 ~kJ No. of mols of Al taken = 13.5 27 =0.5 ~mol Heat required =0.5 5470 ~kJ =2735 ~kJ

Practice Thermodynamics (C) on Quantrex Academy →

More from Thermodynamics (C)

What would be the amount of heat absorbed in the cyclic process shown below? 2024The bond dissociation energy of X₂, Y₂ and X Y are in the ratio of 1: 0.5: 1 . H for the formation of X Y is -200 ~kJ / mol . The bond dissociation energy of X₂ will be 2024Which of the following relation is not correct? 2024The standard Gibbs energy ( G^0 ) for the following reaction is aligned & A ( s )+ B ²⁺( aq ) A ²⁺( aq )+ B ( s ), K _ c =10¹² at & 25^ C aligned ( K _c= . equilibrium constant ) 2024The combustion of benzene (L) gives CO ₂( ~g ) and H ₂ O (L) . Given that heat of combustion of benzene at constant volume is -3263.9 ~kJ ~mol ⁻ ^1 at 25^ C ; heat of combustion (i 2024Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following: 2024Given that bond energies of H - H and Cl - Cl are 430 ~kJ ~mol ⁻¹ and 240 ~kJ ~mol ⁻¹ respectively and H _ f for HCl is -90 ~kJ ~mol ⁻¹ , bond enthalpy of HCl is 2023If enthalpies of formation of C ₂ H ₄( ~g ), CO ₂( ~g ) and H ₂ O ( l ) at 25^ C and 1 ~atm pressure are 52,394 and -286 ~kJ / mol respectively, the change in enthalpy for combusti 2023 Full Thermodynamics (C) list All BITSAT PYQs