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NEETChemistryThermodynamics (C)

If the combustion of 1g of graphite produces 20.7 kJ of heat, what will be molar enthalpy change? Give the significance of sign also.

Options

  1. A∆H = – 2.48 × 10 3 kJmol –1 , Negative value of ∆H ⇒ exothermic rxn
  2. B∆H = – 2.48 × 10 2 kJmol –1 , Negative value of ∆H ⇒ exothermic reaction
  3. C∆H = – 2.48 × 10 2 kJmol –1 , Negative value of ∆H ⇒ endothermic reaction
  4. D∆H = – 3.67 × 10 2 kJmol –1 , Negative value of ∆H ⇒ exothermic reaction

Correct answer

B. ∆H = – 2.48 × 10 2 kJmol –1 , Negative value of ∆H ⇒ exothermic reaction

Step-by-step solution

Correct Option is : (B) ∆H = – 2.48 × 10 2 kJmol –1 , Negative value of ∆H ⇒ exothermic reaction

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