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NEETChemistryThermodynamics (C)

The reaction of cyanamide, NH 2 CN (s), with dioxygen was carried out in a bomb calorimeter, and ∆U was found to be –742.7 kJ mol –1 at 298 K. What is the enthalpy change for the reaction at 298 K? NH 2 CN (g) + 3/2 O 2 (g) → N 2 (g) + CO 2 (g) + H 2 O(l)

Options

  1. A–743.9 kJ
  2. B–786.4 kJ
  3. C–645.8 kJ
  4. D–697.2 kJ

Correct answer

A. –743.9 kJ

Step-by-step solution

Correct Option is : (A) –743.9 kJ

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