Part A Click the AH is an Extensive Property button within the activity, and analyze the relationship between the two reactions that are displayed. The reaction that was on the screen when you started and its derivative demonstrate that the change in enthalpy for a reaction, AH, is an extensive property. Using this property, calculate the change in enthalpy for Reaction 2. Reaction 1: C3HS(g) + 502(g)→3CO2(g) +4H20(g), AĦ1 = -2043 kJ Reaction 2: 5C, Hs(g) +2502(g)→15CO2(g) + 20H2O(g), AH2 =? Express your answer to four significant figures and include the appropriate units. • View Available Hint(s) HA ? AH = Value kJ
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![I Review | Constants | Periodic Table
Open the activity depicting Hess's Law.
N:(g) + 0: (g) → 2NOg)
Part A
AH is an Extensive Property
+ N: (g) + O:(g) → NO(g)
AH is an Extensive Property
Click the
the screen when you started and its derivative demonstrate that the change in enthalpy for a reaction, AH, is an extensive property. Using this property, calculate the
change in enthalpy for Reaction 2.
AH Changes sign when a
process is nevTNed
2NO2)
N:(g) + 0:(g)
button within the activity, and analyze the relationship between the two reactions that are displayed. The reaction that was on
Hesss Law of Constant
Heat Sunnaticn
+ N: (g) +0: (g) → dog
Reaction 1: C3 Hs(g) + 502(g)→3CO2(g) + 4H20(g), AH1 = -2043 kJ
When two reactions are
added together, the
individual reaction
enthalpies are summed.
Notice that equal quantities
of the same species, on both
sides of the reaction arnow,
cancel.
NQig) +
+0: → NO: (2)
Reaction 2: 5C3 Hs(g) + 2502(g)→15CO2 (g) + 20H2O(g), AH2 =?
- N: (g) + O: (g) → NO: (g)
Express your answer to four significant figures and include the appropriate units.
• View Available Hint(s)
HA
ΔΗ
Value
kJ](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4a2bd348-d826-4056-b9ee-5fd404bc60f1%2Ff2f36f42-9ae5-4ec8-aa4b-5bd7ce786886%2F14c83lm_processed.png&w=3840&q=75)
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