An endothermic reaction can be demonstrated by freezing an Erlenmeyer flask to a piece of plywood using a small amount of water. The reaction is provided below. 2 NH4Cl (s) + Ba(OH)2•8H2O (s) → BaCl2 (aq) + 2 NH3 (g) +10 H2O (l) Using the following data given at 25ºC, calculate the enthalphy (ΔΔH, in kJ) for this reaction.

An endothermic reaction can be demonstrated by freezing an Erlenmeyer flask to a piece of plywood using a small amount of water. The reaction is provided below. 2 NH4Cl (s) + Ba(OH)2•8H2O (s) → BaCl2 (aq) + 2 NH3 (g) +10 H2O (l) Using the following data given at 25ºC, calculate the enthalphy (ΔΔH, in kJ) for this reaction.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter4: Polar Bonds, Polar Reactions

Section: Chapter Questions

Problem 30CTQ: According to the conventions above, what is the sign ( + or ) of the P.E. change (H) for Rxn 3?

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