Concept explainers
Interpretation:
The boiling point of an aqueous solution can be calculated with the help of freezing point temperature.
Concept introduction:
Molality is the number of moles of solute to the mass of solvent.
The mass of the solvent should be in kilograms
Calculate molality as follows:
The temperature at which change of liquid state to solid state takes is called freezing point.
The freezing point depression is as follows:
Here,
molality of the solution in
constant for the solvent.
For water:
The boiling point is the temperature at which vapor pressure of the liquid becomes equal to the atmospheric pressure is known as boiling point.
The boiling point elevation is as follows:
Here,
molality of the solution in
constant for the solvent.
For water:
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Chapter 13 Solutions
Introductory Chemistry, Books a la Carte Edition (5th Edition)
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- Solutions Introduced directly into the bloodstream have to be isotonic with blood; that is, they must have the same osmotic pressure as blood. An aqueous NaCl solution has to be 0.90% by mass to be isotonic with blood. What is the molarity of the sodium ions in solution? Take the density of the solution to be 1.00 g/mL.arrow_forwardThe freezing point of a 0.21 m aqueous solution of H2SO4 is -0.796C. (a) What is i? (b) Is the solution made up primarily of (i) H2SO4 molecules only? (ii) H+ and HSO4- ions? (iii) 2H+ and 1SO42- ions?arrow_forwardVodka is advertised to be 80 proof. That means that the ethanol (C2H5OH) concentration is 40% (two significant figures) by volume. Assuming the density of the solution to be 1.0 g/mL, what is the freezing point of vodka? The density of ethanol is 0.789 g/mL.arrow_forward
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