|AP Chemistry - Boiling Point Elevation Worksheet|
|1.||Explain why a
nonvolatile solute dissolved in water makes the system have a higher
then pure water.
what the boiling point would be of 2.00 m sugar in water.
(formula weight 92) , is essentially a nonvolatile liquid that is very
soluble in water. A solution is made by dissolving 46.0 g of
in 250 g of water. Calculate the boiling point of the solution at
an atmospheric pressure of 1 atm.
|4.||A solution of
14 g of an unknown (molecular) compound in 1 kg of benzene boiled at
81.7oC. Calculate the formula weight of the unknown.
|5.||The action of
hot concentrated nitric acid (dissolved in sulfuric acid) on benzene
produces nitrobenzene, C6H5NO2, as the
chief product. A by-product is often obtained, which
consists of 42.86% C, 2.40% H, and 16.67% N with
the remainder being oxygen.
a) Calculate the empirical formula of the formula of this by-product.
b) The boiling point of a solution of 5.5 g of this by-product in 45 g of benzene was 1.84oC higher than that of pure benzene. Calculate a formula weight based on the above data, and determine the actual molecular formula for the compound.