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.

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

For liquid benzene at 25 ̊C, the specific heat at constant pressure is 1.78 J K-1...

For liquid benzene at 25 ̊C, the specific heat at constant pressure is 1.78 J K-1 g-1, the density is 0.88 g cm-3, the coefficient of thermal expansion is 0.00124 K-1, and the isothermal compressibility is 9.8x10-5 atm-1. Calculate the molar heat capacity of benzene at 25 ̊C, at constant pressure and at constant volume.

What is the change in entropy when 7.61 mL of liquid benzene (C6H6, d = 0.879...

What is the change in entropy when 7.61 mL of liquid benzene (C6H6, d = 0.879 g/mL) is combusted in the presence of 22.3 L of oxygen gas, measured at 298 K and 1 atm pressure? (R = 0.0821 L · atm/(K · mol)) 2C6H6(l) + 15O2(g) → 12CO2(g) + 6H2O(l); ΔS° = –437.7 J/K at 298 K a. 18.7 J/K b. 398 J/K c. 436 J/K d. 45.3 J/K e. 37.4 J/K

For 1 kg of liquid water, determine the entropy change of the universe when the water...

For 1 kg of liquid water, determine the entropy change of the universe when the water is: Initially at 0 C, is heated to 50 C by contact with a thermal reservoir at 50 C and then to 100 C with a thermal reservoir at 100 C Assume Cp = 4.2 kJ/kg-K

Which of the following statements is true concerning the decomposition of liquid water to form hydrogen...

Which of the following statements is true concerning the decomposition of liquid water to form hydrogen gas and oxygen gas? 2H2O(l) → 2H2(g) + O2(g) a. ΔH is greater than ΔU because the pressure is constant. b. ΔH is less than ΔU because of the pressure–volume work done by the gaseous products. c. ΔH is less than ΔU because the atmosphere does pressure–volume work on the gaseous products. d. ΔH equals ΔU because both are state functions. e. ΔH is...

Water has a much lower boiling point and viscosity than hexadecane. But, water is capable of...

Water has a much lower boiling point and viscosity than hexadecane. But, water is capable of hydrogen bonding and hexadecane does not… shouldn’t water have the higher boiling point and viscosity? Explain why this occurs.

A stretched-out polymer has lower entropy than a contracted one (think back to the rubber band...

A stretched-out polymer has lower entropy than a contracted one (think back to the rubber band problem). Applying mechanical forces to a polymer stretches it out, and it is also more likely to react by breaking bonds along the polymer chain (compared to the contracted case). a. Draw the reaction energy profile for the zero-force and mechanically biased cases. b. Use the Arrhenius expression to explain why the mechanochemical bond breaking is faster

A liquid mixture of benzene and toluene is contained in a closed vessel at 60°C. The...

A liquid mixture of benzene and toluene is contained in a closed vessel at 60°C. The only other component in the system is nitrogen gas which is used to pressurize the system to 1 atm total pressure (absolute). The liquid is 70 mole% benzene and 30 mole% toluene, and the N2 is considered non-condensable (i.e., the liquid mole fraction of nitrogen is zero). Consider the mixture to be ideal, and determine the vapor mole fractions of the three components. (Document...

Which of the following statements are true? Choose all that apply. 1.The length of a microscope...

Which of the following statements are true? Choose all that apply. 1.The length of a microscope is greater than the sum of the focal lengths of the eyepiece & objective. 2.The purpose of a large primary mirror in a telescope is to have a large magnification. 3.Better resolution is achieved with larger wavelengths. 4. Far-sighted people use converging lenses to correct their vision. 5. Nearsighted people see close up objects in focus. 6. For a telescope, the smaller fe is,...

TRUE OR FALSE *freezing water is possible only if the entropy of the surroundings increases ·...

TRUE OR FALSE *freezing water is possible only if the entropy of the surroundings increases · Liquid water has a lower entropy than liquid benzene at 25°C because of hydrogen bonding in water. · 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. · It is impossible to freeze ethanol because the change in entropy of the system is negative. · Binding a substrate to...

True or False Determine if the following statements are true or false. _____ 1. A liquid...

True or False Determine if the following statements are true or false. _____ 1. A liquid takes the volume of its container. _____ 2. Particles of amorphous solids have no definite pattern. _____ 3. A beef steak is an example of a crystalline solid. _____ 4. Viscosity causes water to curve upward at the top rim of a glass. _____ 5. There is more gas than any other state of matter in the universe. _____ 6. All states of matter...

Question