Homework Answers
Lets number the reaction as 1, 2, 3 from top to bottom
required reaction should be written in terms of other reaction
This is Hess Law
required reaction can be written as:
reaction 3 = +0.5 * (reaction 1) +0.5 * (reaction 2)
So, ΔHo rxn for required reaction will be:
ΔHo rxn = +0.5 * ΔHo rxn(reaction 1) +0.5 * ΔHo rxn(reaction 2)
= +0.5 * (196) +0.5 * (-790)
= -297 KJ
Answer: -297 KJ
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Question (1 point) Calculate the enthalpy of formation of 1 mole SO2(g) from the standard enthalpy...
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help Using the Hess' law to calculate the enthalpy (kJ) of the reaction of the following...
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help
Using the Hess' law to calculate the enthalpy (kJ) of the reaction of the following reaction 2502 (g) + O2(g) → 2503 (g) by using the two given reactions below 25 (s) + 302 (g) → 2503 (g) AH = -790 kJ S (s) + O2 (g) → SO2(g) AH = -297 kJ 196 O-543 1087 0-1384 0-196
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