Choose all the true statements. -Liquid water has a lower entropy than liquid benzene at 25°C...

Choose all the true statements.

-Liquid water has a lower entropy than liquid benzene at 25°C because of hydrogen bonding in water.

-Entropy is the main driving force in the formation of the DNA double helix.

-All elements in their standard states have an entropy of zero at 25°C.

-Reactions that involve only gases always have a positive change in entropy

-Evaporating a liquid has always a positive change in entropy freezing water is possible only if the entropy of the surroundings increases

-It is impossible to freeze ethanol because the change in entropy of the system is negative.

-Ice at 0°C has a higher entropy than liquid water at 0°C because the density of ice is lower than the density of water.

-Binding a substrate to an enzyme always lowers the entropy because the substrate loses translational and rotational degrees of freedom.

Solutions

Expert Solution

-Liquid water has a lower entropy than liquid benzene at 25°C because of hydrogen bonding in water. FALSE, it has higher chaos due to polarity

- All elements in their standard states have an entropy of zero at 25°C. False, this must be at T = 0 K

-Reactions that involve only gases always have a positive change in entropy --> False, depends on the overall change of mol of gases in products/reactants

-Evaporating a liquid has always a positive change in entropy freezing water is possible only if the entropy of the surroundings increases --> TRUE since you are increasing chaos/disorder in the system

-It is impossible to freeze ethanol because the change in entropy of the system is negative. --> FALSE, the entropy of the universe is posstivie

-Ice at 0°C has a higher entropy than liquid water at 0°C because the density of ice is lower than the density of water. --> false, since ice is pretty ordered system, meaning it has low entropy

-Binding a substrate to an enzyme always lowers the entropy because the substrate loses translational and rotational degrees of freedom. --> false, thas no effect

queen_honey_blossom answered 1 year ago

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