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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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Given the following hypothetical data:

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lculate Chapter 10, Problem 45QAP, Given the following hypothetical data: mg src=Images/HTML_99425-10-45QAP_image001.jpg alt="" for the reaction

mg src=Images/HTML_99425-10-45QAP_image003.jpg alt="" align="top"/>

Interpretation Introduction

Interpretation:

ΔH for the given reaction should be calculated.

Y(g)+XZ(g)XY(g)+Z(g) (1)

Concept Introduction:

ΔH stands for change in enthalpy.

The amount of heat released or absorbed in a reaction which occurs at constant pressure is known as change in enthalpy.

Explanation

Given information:

X(g)+Y(g)XY(g)

ΔH=a kJ

X(g)+Z(g)XZ(g)

ΔH=b kJ

According the two given reactions, in first reaction Y is present on the reactant side, which is correct for the reaction (1) and in second reaction, XZ(g) is present on the product side, but according to reaction (1), it must be on reactant side. Therefore, flip the second reaction which makes sign of change in enthalpy negative.

XZ(g)X(g)+Z(g)

Δ

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