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1) The boiling point of an aqueous solution is 101.98 ∘C. What is the freezing point?...

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Chemistry

1) The boiling point of an aqueous solution is 101.98 ∘C. Whatis the freezing point? Consult the table of colligativeconstants.

freezing point:   °C

2)

Quinine is a natural product extracted from the bark of thecinchona tree, which is native to South America. Quinine is used asan antimalarial agent.

When 0.829 g of quinine is dissolved in 25.0 g of cyclohexane,the freezing point of the solution is lowered by 2.13 ∘C. Look upthe freezing point and Kf constant for cyclohexane in theColligative Constants table.

Calculate the molar mass of quinine.

molar mass:

g/mol

3)

If a 0.770 m aqueous solution freezes at −2.30 ∘C, what is thevan't Hoff factor, i, of the solute?

Consult the table of Kf values.

i=

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