When one mole of HgO(s) decomposes to form one mole of Hg(1) and ½ mole of O2(g) the change in enthalpy for the reaction is +90.7 kJ. What quantity of heat is requiredto produce 1 mole of O2(g) by this reaction?-181 kJ+181 kJ-90.7 kJ+90.7 kJ

Answered: When one mole of HgO(s) decomposes to…

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

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

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When one mole of HgO(s) decomposes to form one mole of Hg(1) and ½ mole of O2(g) the change in enthalpy for the reaction is +90.7 kJ. What quantity of heat is required
to produce 1 mole of O2(g) by this reaction?
-181 kJ
+181 kJ
-90.7 kJ
+90.7 kJ

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This question is answered by using the simple concept of calculation of heat change using the thermochemical equation and the stoichiometry which involves the relationship between moles and the heat.

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