Through photosynthesis, plants build molecules of sugar containing several carbon atoms from carbon dioxide. In the process, entropy is decreased. The reaction of CO 2 with formic acid to form oxalic acid provides a simple example of a reaction in which the number of carbon atoms in a compound increases: CO 2 (aq) + HCOOH(aq) → H 2 C 2 O 4 (aq) (a) Calculate the standard entropy change for this reaction and discuss the sign of Δ S ° . (b) How do plants carry out reactions that increase the number of carbon atoms in a sugar, given the changes in entropy for reactions like this?
Through photosynthesis, plants build molecules of sugar containing several carbon atoms from carbon dioxide. In the process, entropy is decreased. The reaction of CO 2 with formic acid to form oxalic acid provides a simple example of a reaction in which the number of carbon atoms in a compound increases: CO 2 (aq) + HCOOH(aq) → H 2 C 2 O 4 (aq) (a) Calculate the standard entropy change for this reaction and discuss the sign of Δ S ° . (b) How do plants carry out reactions that increase the number of carbon atoms in a sugar, given the changes in entropy for reactions like this?
Solution Summary: The author explains how plants convert carbon dioxide and water vapor from the atmosphere to glucose and oxygen gas via photosynthesis.
Through photosynthesis, plants build molecules of sugar containing several carbon atoms from carbon dioxide. In the process, entropy is decreased. The reaction of CO2with formic acid to form oxalic acid provides a simple example of a reaction in which the number of carbon atoms in a compound increases:
CO
2
(aq)
+
HCOOH(aq)
→
H
2
C
2
O
4
(aq)
(a) Calculate the standard entropy change for this reaction and discuss the sign of
Δ
S
°
.
(b) How do plants carry out reactions that increase the number of carbon atoms in a sugar, given the changes in entropy for reactions like this?
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