Question

1a:

The solubility of a compound with a molecular weight of 196.7 is determined to be 24.0 g in 300.0 g of water at 398 K. Express this concentration in terms of molality.

1b:

Express the concentration of the solute from the problem above as a mole fraction.

1c:

The molal freezing point constant for copper is 23 °C/m. If pure copper melts at 1083°C, what will be the melting point of a brass made of 16.8 mass percent Zn and the remainder Cu?

Answer 1

1a.

1b.

1c.