Question

Part A Cyclohexane has a freezing point of 6.50 °C and a Kf of 20.0 °C/m. What is the freezing point of a solution made by dissolving 0.771 g of biphenyl (C12H10) in 25.0 g of cyclohexane? Express the temperature numerically in degrees Celsius. Part B Paradichlorobenzene, C6H4Cl2, is a component of mothballs. A solution of 2.00 g in 22.5 g of cyclohexane boils at 82.39 °C. The boiling point of pure cyclohexane is 80.70 °C. Calculate Kb for cyclohexane. Express the constant numerically in degrees Celsius per molal.

          Part A
Cyclohexane has a freezing point of 6.50 °C and a Kf of 20.0 °C/m. What is the freezing point of a solution made by dissolving 0.771 g of biphenyl (C12H10) in 25.0 g of cyclohexane?
Express the temperature numerically in degrees Celsius.
Part B
Paradichlorobenzene, C6H4Cl2, is a component of mothballs. A solution of 2.00 g in 22.5 g of cyclohexane boils at 82.39 °C. The boiling point of pure cyclohexane is 80.70 °C. Calculate Kb for cyclohexane.
Express the constant numerically in degrees Celsius per molal.

Part A
Cyclohexane has a freezing point of 6.50 °C and a Kf of 20.0 °C/m. What is the freezing point of a solution made by dissolving 0.771 g of biphenyl (C12H10) in 25.0 g of cyclohexane?
Express the temperature numerically in degrees Celsius.
Part B
Paradichlorobenzene, C6H4Cl2, is a component of mothballs. A solution of 2.00 g in 22.5 g of cyclohexane boils at 82.39 °C. The boiling point of pure cyclohexane is 80.70 °C. Calculate Kb for cyclohexane.
Express the constant numerically in degrees Celsius per molal.

Added by Sherri B.

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