(fHydrogen cyanide, a useful intermediate in the production of other pharmaceuticals and other chemicals, can be be prepared according to the following reaction:CH4(g) + NH3(g) ⟶⟶ HCN(g) + 3 H2(g). ΔΔHrxn= ????Use the information provided to calculate the change in enthalpy for this reactionN2(g) + 3 H2(g) ⟶⟶ 2 NH3(g). ΔΔHrxn= -91.8 kJ/molC(s) + 2 H2(g) ⟶⟶ CH4(g). ΔΔHrxn= -74.9 kJ/molH2(g) + 2 C(s) + N2(g) ⟶⟶ 2 HCN(g) ΔΔHrxn= +270.3 kJ/mol

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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(fHydrogen cyanide, a useful intermediate in the production of other pharmaceuticals and other chemicals, can be be prepared according to the following reaction:

CH₄(g) + NH₃(g) ⟶⟶ HCN(g) + 3 H₂(g). ΔΔH_rxn= ????

Use the information provided to calculate the change in enthalpy for this reaction

N₂(g) + 3 H₂(g) ⟶⟶ 2 NH₃(g). ΔΔH_rxn= -91.8 kJ/mol

C(s) + 2 H₂(g) ⟶⟶ CH₄(g). ΔΔH_rxn= -74.9 kJ/mol

H₂(g) + 2 C(s) + N₂(g) ⟶⟶ 2 HCN(g) ΔΔH_rxn= +270.3 kJ/mol

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