Consider the following chemical reactions and their standard reaction enthalpies (ΔH) at 298 K. NH + HCl(g) → NHCl(s) ΔH = -176 kJ/mol N(g) + 3 H(g) → 2 NH(g) ΔH = -92 kJ/mol N(g) + 4 H(g) + Cl(g) → 2 NHCl(s) ΔH = -629 kJ/mol Use this thermochemical data to calculate the standard heat of reaction for the synthesis of hydrogen chloride gas from H(g) and Cl(g) at a temperature of 298 K. The value of ΔH (at 298 K) for the reaction H(g) + Cl(g) → 2 HCl(g) is:
Consider the following chemical reactions and their standard reaction enthalpies (ΔH) at 298 K. NH + HCl(g) → NHCl(s) ΔH = -176 kJ/mol N(g) + 3 H(g) → 2 NH(g) ΔH = -92 kJ/mol N(g) + 4 H(g) + Cl(g) → 2 NHCl(s) ΔH = -629 kJ/mol Use this thermochemical data to calculate the standard heat of reaction for the synthesis of hydrogen chloride gas from H(g) and Cl(g) at a temperature of 298 K. The value of ΔH (at 298 K) for the reaction H(g) + Cl(g) → 2 HCl(g) is:
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter4: Energy And Chemical Reactions
Section: Chapter Questions
Problem 97QRT
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Consider the following
NH + HCl(g) → NHCl(s) ΔH = -176 kJ/mol
N(g) + 3 H(g) → 2 NH(g) ΔH = -92 kJ/mol
N(g) + 4 H(g) + Cl(g) → 2 NHCl(s) ΔH = -629 kJ/mol
Use this thermochemical data to calculate the standard heat of reaction for the synthesis of hydrogen chloride gas from H(g) and Cl(g) at a temperature of 298 K. The value of ΔH (at 298 K) for the reaction H(g) + Cl(g) → 2 HCl(g) is:
-242 kJ/mol
-897 kJ/mol
-185 kJ/mol
391 kJ/mol
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