Question

Using the average moles of vitamin C titrated, calculate the amount of vitamin C, in mg, that was in the tablet you analyzed. (Hint: Remember how the tablet was prepared and put into solution before titration).

a. By subtracting the initial mass of the tablet from the final mass after titration.
b. By multiplying the average moles of vitamin C by its molar mass.
c. By determining the concentration of vitamin C in the tablet.
d. By measuring the volume of the titrant used in the titration.
Please select the correct option.

Answer 1

b. By multiplying the average moles of vitamin C by its molar mass.

To calculate the amount of vitamin C in the tablet, you need to multiply the average moles of vitamin C titrated by its molar mass.

Step-by-step explanation:

To calculate the amount of vitamin C in the tablet, we need to use the average moles of vitamin C titrated. The correct option for calculating the amount of vitamin C is b. By multiplying the average moles of vitamin C by its molar mass.

The molar mass of vitamin C, C6HO6, can be calculated by adding up the atomic masses of its constituent elements: 6 carbon (C) atoms with an atomic mass of 12.01 amu, 6 hydrogen (H) atoms with an atomic mass of 1.01 amu, and 6 oxygen (O) atoms with an atomic mass of 16.00 amu. Therefore, the molar mass of vitamin C is 176.14 amu.

By multiplying the average moles of vitamin C titrated by its molar mass in grams/mole, we can calculate the amount of vitamin C in mg. This will give us the mass of vitamin C that was in the tablet analyzed.