Styrene ( C 8 H 8 ), the precursor of polystyrene polymers , hasa standard heat of combustion of -4395 kJ/mol. Write a balanced equation for the combustion reaction, and calculate Δ H ° f for styrene in kJ/mol. Δ H ° f [ C O 2 ( g ) ] = − 393. 5 kJ/mol; Δ H ° f [ H 2 O ( l ) ] = − 285. 8 kJ/mol
Styrene ( C 8 H 8 ), the precursor of polystyrene polymers , hasa standard heat of combustion of -4395 kJ/mol. Write a balanced equation for the combustion reaction, and calculate Δ H ° f for styrene in kJ/mol. Δ H ° f [ C O 2 ( g ) ] = − 393. 5 kJ/mol; Δ H ° f [ H 2 O ( l ) ] = − 285. 8 kJ/mol
Solution Summary: The author explains the balanced chemical equation for the combustion of styrene in kJ/mol.
Styrene (
C
8
H
8
), the precursor of polystyrene polymers, hasa standard heat of combustion of -4395 kJ/mol. Write a balanced equation for the combustion reaction, and calculate
Δ
H
°
f
for styrene in kJ/mol.
Δ
H
°
f
[
C
O
2
(
g
)
]
=
−
393.
5 kJ/mol;
Δ
H
°
f
[
H
2
O
(
l
)
]
=
−
285.
8 kJ/mol
Definition Definition Transformation of a chemical species into another chemical species. A chemical reaction consists of breaking existing bonds and forming new ones by changing the position of electrons. These reactions are best explained using a chemical equation.
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Predict the major products of the following organic reaction:
CN
Δ
+
A ?
NC
Some important notes:
• Draw the major product, or products, of the reaction in the drawing area below.
• If there aren't any products, because no reaction will take place, check the box below the drawing area instead.
• Be sure to use wedge and dash bonds when necessary, for example to distinguish between major products that are enantiomers.
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MH
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F2
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F4
F5
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A
DII
F6
F7
F8
7
*
8
Λ
&
6
F9
F10
9
0
4
Predict the major products of the following organic reaction:
+
Δ
A ?
Some important notes:
• Draw the major product, or products, of the reaction in the drawing area below.
• If there aren't any products, because no reaction will take place, check the box below the drawing area instead.
• Be sure to use wedge and dash bonds when necessary, for example to distinguish between major products that are enantiomers.
Explanation
Check
Click and drag to start drawing a structure.
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