Skip to main content
Sign in Register
Question no. 14137

How does the evaporation of an aqueous sugar solution affect its molarity__________________?

Select your answer for: How does the evaporation of an aqueous sugar solution affect its molarity__________________?
Show answer

Answer: C. Remain unchanged

Explanation

Evaporating an aqueous sugar solution removes solvent, decreasing the solution volume while the moles of solute remain constant, thereby increasing molarity.

Subject
Engineering
Topic
—
Difficulty
medium

Related questions

Q1. The elevation in the boiling point of a solution is directly proportional to the ______________ of the solution?

Select your answer for: The elevation in the boiling point of a solution is directly proportional to the ______________ of the solution?
Show answer

Answer: A. Molal concentration

Boiling point elevation is a colligative property proportional to the molal concentration of the solution. Molality expresses solute quantity per unit mass of solvent, remaining unaffected by temperature changes. Using m...

Q2. What methods can be employed to achieve the crystallization of a solute from its solution________________?

Select your answer for: What methods can be employed to achieve the crystallization of a solute from its solution________________?
Show answer

Answer: D. All A., B. & C.

Evaporating pure solvent increases solute concentration past the saturation threshold. Cooling a solution lowers solubility and successfully induces crystal formation. Adding a second soluble substance decreases primary...

Q3. How significant is the influence of pressure on the heat capacity of gases ______________?

Select your answer for: How significant is the influence of pressure on the heat capacity of gases ______________?
Show answer

Answer: C. Both A. & B.

Gas heat capacity varies with pressure, especially at elevated pressures near critical points. Below critical temperatures, gases exhibit non ideal behavior that makes heat capacity pressure dependent. Low pressures belo...

Q4. The heats of vaporization for CS2, C2H5OH, and H2O are 26.8, 38.6, and 40.6 kJ/kg·mole, respectively. What is the sequence of decreasing intermolecular forces among these liquids________________?

Select your answer for: The heats of vaporization for CS2, C2H5OH, and H2O are 26.8, 38.6, and 40.6 kJ/kg·mole, respectively. What is the sequence of decreasing intermolecular forces among these liquids________________?
Show answer

Answer: A. H2O > C2H5OH > CS2

Higher heats of vaporization reflect stronger intermolecular forces holding liquid molecules together. Water possesses extensive hydrogen bonding, giving it the highest heat of vaporization. Ethanol has weaker hydrogen b...

Q5. What factor determines the average translational kinetic energy possessed by a gas molecule__________________?

Select your answer for: What factor determines the average translational kinetic energy possessed by a gas molecule__________________?
Show answer

Answer: C. Absolute temperature

Kinetic theory of gases establishes that average translational kinetic energy depends solely on absolute temperature. Molecular mass, size, and chemical nature do not affect the average kinetic energy of gas molecules. D...

Q6. The enthalpy change associated with the reaction C(s) + 2S(s) → CS2(l) amounting to 104.2 kJ represents the heat of_________________?

Select your answer for: The enthalpy change associated with the reaction C(s) + 2S(s) → CS2(l) amounting to 104.2 kJ represents the heat of_________________?
Show answer

Answer: A. Formation

The enthalpy change for producing one mole of a compound from elements is the heat of formation. Carbon in solid form plus sulfur creates carbon disulfide liquid in a standard formation reaction. Standard state enthalpy...