Question

A solution is prepared by dissolving 25.47 g of K2Cr2O7 in 100.00 g of water. The volume of the resulting solution 104.00 mL. Calculate the following: (5 points each)
a. Mole fraction of K2Cr2O7
b. molarity of solution
c. molality if solution
d. mass percent of K2Cr2O7
e. density of the solution

Answer 1

Mole fraction of K2Cr2O7 = 4.76x10^-4

Molarity of Solution =2.67M

Mass percent of K2Cr2O7=26%