Concept explainers
(a)
Interpretation:
Equivalence of the magnitude of molality and the molarity in a dilute aqueous solution should be demonstrated.
Concept introduction:
The molarity, molality and density of a solution can be calculated as follows:
(b)
Interpretation:
In a dilute solution, proportionality of the solute mole fraction to the molality should be demonstrated.
Concept introduction:
In a dilute solution, solvent concentration is larger than the solute concentration.
(c)
Interpretation:
In a dilute aqueous solution, proportionality of the solute mole fraction to the molarity should be demonstrated.
Concept introduction:
In an aqueous solution, solvent is water. A dilute aqueous solution, water concentration is larger than the solute concentration.
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GENERAL CHEMISTRY-SOLUTIONS MANUAL
- A student determines the molar mass of acetone, , She found that the equilibrium temperature of a mixture of ice and water was 1.0C on her thermometer. When she added 11.1g of her sample to the mixture, the temperature, after through stirring, fell to -3.0C. She then poured off the solution through a screen into a beaker. The mass of the solution was 90.4g. a. what was the freezing point depression? b. what was the molarity of the acetone? c. how much aceton was in the decanted solution? d. how much water was in the decanted solution? e. how much acetone would there bein a solution containing 1kg of water and acetone at the same concentration as she has in herexperiment? f. what did she find to be the molar mass of aceton, assumingshe made the calculation properly?arrow_forwardThe osmotic pressure of an aqueous solution at 288 K is 99.0 kPa. Estimate the freezing point of the solution.arrow_forwardDerive expression for Raoult’s law when the solute is non-volatile.arrow_forward
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