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1. Consider the following reaction, which occurs at standard state: 2C1(g) C12(g) AH° = –243.4 kJ a. Which has the higher, more positive, enthalpy under these conditions, 2Cl (g) or C12(g)? b. Consider the following reaction: 2 Mg(s) + 02(g) → 2 MgO(s) AH = -1204 kJ. c. Is the reaetion exothermic or endothermic? d. Calculate the amount of heat transferred when 2.4 g of Mg(s) reacts at constant pressure. How many grams of MgO are produced during an enthalpy change of 96.0 kJ? e. How many kJ of heat are absorbed when 7.50g of MgO(s) are decomposed into Mg(s) and O{g)at constant pressure?

1. Consider the following reaction, which occurs at standard state: 2C1(g) C12(g) AH° = –243.4 kJ a. Which has the higher, more positive, enthalpy under these conditions, 2Cl (g) or C12(g)? b. Consider the following reaction: 2 Mg(s) + 02(g) → 2 MgO(s) AH = -1204 kJ. c. Is the reaetion exothermic or endothermic? d. Calculate the amount of heat transferred when 2.4 g of Mg(s) reacts at constant pressure. How many grams of MgO are produced during an enthalpy change of 96.0 kJ? e. How many kJ of heat are absorbed when 7.50g of MgO(s) are decomposed into Mg(s) and O{g)at constant pressure?

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.132QP
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1. Consider the following reaction, which occurs at standard state: 2C1(g) C12(g) AHº =–243.4 kJ a. Which has the higher, more positive, enthalpy under these conditions, 2Cl (g) or C12(g)? b. Consider the following reaction: 2 Mg(s) + 02(g) → 2 MgO(s) AH = -1204 kJ. c. Is the reaetion exothermic or endothermic? d. Calculate the amount of heat transferred when 2.4 g of Mg(s) reacts at constant pressure. How many grams of MgO are produced during an enthalpy change of 96.0 kJ? e. How many kJ of heat are absorbed when 7.50g of MgO(s) are decomposed into Mg(s) and O{g)at constant pressure?
Transcribed Image Text:1. Consider the following reaction, which occurs at standard state: 2C1(g) C12(g) AHº =–243.4 kJ a. Which has the higher, more positive, enthalpy under these conditions, 2Cl (g) or C12(g)? b. Consider the following reaction: 2 Mg(s) + 02(g) → 2 MgO(s) AH = -1204 kJ. c. Is the reaetion exothermic or endothermic? d. Calculate the amount of heat transferred when 2.4 g of Mg(s) reacts at constant pressure. How many grams of MgO are produced during an enthalpy change of 96.0 kJ? e. How many kJ of heat are absorbed when 7.50g of MgO(s) are decomposed into Mg(s) and O{g)at constant pressure?
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