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MHT CET202015 Oct 2020Morning ShiftChemistryThermodynamics (C)Actual

What is the value of H ^ for the formation of ethanol from ethene gas and liquid water from following data? (i) C ₂ H ₅ OH _ (1) +3 O _ 2( ~g ) 2 CO _ 2( ~g ) +3 H ₂ O _ ( l ) H ^ =-1368 ~kJ (ii) C ₂ H _ 4( ~g ) +3 O _ 2( ~g ) 2 CO _ 2( ~g ) +2 H ₂ O _ ( l ) H ^ =1410 ~kJ

Options

  1. A-1326 0 ~kJ
  2. B-4188 0 ~kJ
  3. C-42 0 ~kJ
  4. D-2778 0 ~kJ

Correct answer

C. -42 0 ~kJ

Step-by-step solution

Subtract equation (i) from equation (ii) H⁰=1410-1368=42 ~kJ

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