Question

Problem 8.1. Titanium metal is capable of dissolving up to 30 atomic percent
oxygen. Consider a solid solution in the system Ti–O containing an atom fraction,
XO ¼ 0.12. The molar volume of this alloy is 10.68 cc/mol. Calculate:
a. The weight percent of O in the solution.
b. The molar concentration (mol/cc) of O in the solution.
c. The mass concentration (gm/cc) of O in the solution.

Answer 1

atomic number of Ti = 47.9

atomic number of O = 16

weight % of O =   (0.3 x 16 / (0.3 x 16 + 0.7 x 47.9)) x 100

                        = 12.52%

molar concentration = moles of solute / volume

                                 = 12 / 10.68

                                  = 1.12

mass concentration = 1.12 x 32 = 35.84