For each pair of substances listed here, choose the one having the larger standa
ID: 1015077 • Letter: F
Question
For each pair of substances listed here, choose the one having the larger standard entropy value at 25°C. The same molar amount is used in the comparison. (a)
Li(l) Li(s)
Explain the basis for your choice.
Species with greater molar masses have larger standard entropy.
Species with greater molar masses have lower standard entropy.
Liquids have larger standard entropy than solids.
Solids have larger standard entropy than liquids.
Hydrogen bonding leads to a more ordered arrangement of the system and therefore lower standard entropy.
Hydrogen bonding leads to a more ordered arrangement of the system and therefore larger standard entropy.
(b)
CH3OCH3(l) C2H5OH(l)
Explain the basis for your choice.
Species with greater molar masses have larger standard entropy.
Species with greater molar masses have lower standard entropy.
Liquids have larger standard entropy than solids.
Solids have larger standard entropy than liquids.
Inability to hydrogen bond leads to a less ordered arrangement of the system and therefore higher standard entropy.
Hydrogen bonding leads to a more ordered arrangement of the system and therefore larger standard entropy.
(d)
CO2(g) CO(g)
Explain the basis for your choice.
Species with greater molar masses have larger standard entropy.
Species with greater molar masses have lower standard entropy.
Liquids have larger standard entropy than solids.
Solids have larger standard entropy than liquids.
Hydrogen bonding leads to a more ordered arrangement of the system and therefore lower standard entropy.
Hydrogen bonding leads to a more ordered arrangement of the system and therefore larger standard entropy.
(e)
O3(g) O2(g)
Explain the basis for your choice.
Species with greater molar masses have larger standard entropy.
Species with greater molar masses have lower standard entropy.
Liquids have larger standard entropy than solids.
Solids have larger standard entropy than liquids.
Hydrogen bonding leads to a more ordered arrangement of the system and therefore lower standard entropy.
Hydrogen bonding leads to a more ordered arrangement of the system and therefore larger standard entropy.
(f)
N2O4(g) NO2(g)
Explain the basis for your choice.
Species with greater molar masses have larger standard entropy.
Species with greater molar masses have lower standard entropy.
Liquids have larger standard entropy than solids.
Solids have larger standard entropy than liquids.
Hydrogen bonding leads to a more ordered arrangement of the system and therefore lower standard entropy.
Hydrogen bonding leads to a more ordered arrangement of the system and therefore larger standard entropy.
Explanation / Answer
Entropy means disorderness of molecules or atoms or particles (Entropy measures the disorderness).
a) Answer: Li (l)
Liquids have larger standard entropy than solids.
b) Answer: CH3OCH3 (No hydrogen bonding).
Hydrogen bonding leads to a more ordered arrangement of the system and therefore larger standard entropy.
d) Answer: CO2 is having more entropy due to Tri atomic molecule
Species with greater molar masses have larger standard entropy
e) Answer: O3 Entropy is more.
Species with greater molar masses have larger standard entropy.
f) Answer: N2O4 Entropy is more.
Species with greater molar masses have larger standard entropy.
Note: If the complexity of the molecule increases the Entropy also Increases.
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