lgs everything else).e system (the part you are studyml(reautnsiost systems we are interested in will have a constant pressure, meaning that q (heat orthermal energy) would be equivalent to the change in enthalpy (AH)We defined environments in which heat goes into the systemsurroundings get hot as exothermic ΔΗ-and the surroundings get cold as EXrmic AH + while environments in which heat goes out of the system and theFor each of the environments below: (1) identify your system and surroundings and (2)predict whether it would be endothermic or exothermic.1.a. Wood burningb. Water freezingc. Sweat evaporatingd. Chemical hand-warmer

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Asked Jan 10, 2019
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lgs everything else).
e system (the part you are studyml
(reaut
nsi
ost systems we are interested in will have a constant pressure, mean
ing that q (heat or
thermal energy) would be equivalent to the change in enthalpy (AH)
We defined environments in which heat goes into the system
surroundings get hot as exothermic ΔΗ-
and the surroundings get cold as EX
rmic AH + while environments in which heat goes out of the system and the
For each of the environments below: (1) identify your system and surroundings and (2)
predict whether it would be endothermic or exothermic.
1.
a. Wood burning
b. Water freezing
c. Sweat evaporating
d. Chemical hand-warmer
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lgs everything else). e system (the part you are studyml (reaut nsi ost systems we are interested in will have a constant pressure, mean ing that q (heat or thermal energy) would be equivalent to the change in enthalpy (AH) We defined environments in which heat goes into the system surroundings get hot as exothermic ΔΗ- and the surroundings get cold as EX rmic AH + while environments in which heat goes out of the system and the For each of the environments below: (1) identify your system and surroundings and (2) predict whether it would be endothermic or exothermic. 1. a. Wood burning b. Water freezing c. Sweat evaporating d. Chemical hand-warmer

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Expert Answer

Step 1

A reaction which occurs when the temperature of the system increases due to release of heat is known as exothermic reaction.

A reaction which occurs when the temperature of the system decreases as heat is absorbed is known as endothermic reaction.

Step 2

Heat of reaction in case of endothermic reaction is positive due to the gaining of heat by system.

Heat of reaction in case of exothermic reaction is negative due to evolution of heat to the surrounding.

Step 3

Part a

In case of ‘wood burning’, system is wood which is burning while surrounding is an atmosphere.

Wood is composed of carbon and oxygen ...

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