Enthalpy of Reaction — Unit test Answers
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For which solutes dissolved in a liquid is the overall enthalpy of solution exothermic?
A
some gases and most solidsB
some solids and most gasesC
few solids and few gasesD
most solids and most gases22
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Consider the following enthalpy diagram:Which label shows the overall enthalpy change and is the reaction exothermic or endothermic?
A
A, exothermic.B
B, exothermic.C
C, endothermic.D
D, endothermic.23
Which is the best example of how electromagnetic energy is used?
A
a pot of boiling water on a gas stoveB
a patient receiving an X-ray in a hospitalC
a car burning gasoline to power the engineD
a car of a roller coaster moving quickly down a slope24
How should the baking of a pizza be categorized?
A
as an exothermic process because the dough releases heatB
as an endothermic process because the dough releases heatC
as an exothermic process because the dough absorbs heatD
as an endothermic process because the dough absorbs heat25
Consider the following intermediate chemical equations.How will oxygen appear in the final chemical equation?
A
as a product
B
as a reactant
C
O(g) as a productD
2O(g) as a reactantDid you find these answers helpful?
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