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MHT CET202019 Oct 2020Morning ShiftChemistryThermodynamics (C)Actual

From the given reaction, N _ 2( ~g ) +3 H _ 2( ~g ) 2 NH _ 3( ~g ) H =-92 6 ~kJ , the enthalpy of formation of NH ₃ is

Options

  1. A-92 6 ~kJ
  2. B-138 9 k J
  3. C-185 2 ~kJ
  4. D-46 3 ~kJ

Correct answer

D. -46 3 ~kJ

Step-by-step solution

(B) N _ 2( ~g ) +3 H _ 2( ~g ) 2 NH _ 3( ~g ) H =-92.6 ~kJ Enthalpy of formation of NH ₃= -92.6 2 =-46.3 ~kJ

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