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AP EAMCET2020ChemistryThermodynamics (C)

For the reaction, 3 C ₂ H _ 2( ~g ) C ₆ H _ 6( ~g ) , calculate the standard enthalpy change. The values of H _ f for C ₂ H ₂ and C ₆ H ₆ respectively are 250 ~kJ ~mol ⁻¹ and 90 ~kJ ⁻¹ ~mol ⁻¹ .

Options

  1. A+660 ~kJ mol ⁻¹
  2. B-260 ~kJ mol ⁻¹
  3. C+260 ~kJ mol ⁻¹
  4. D-660 ~kJ mol ⁻¹

Correct answer

D. -660 ~kJ mol ⁻¹

Step-by-step solution

No solution. Refer to answer key.

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