Prepare 100 mL of an aqueous 0.10 M NaHCO3 solution.

Question

Set up calculation for how much you need for the solution

Answer 1

First determine the molecular mass of NaHCO3 = 84 g/mole. A 0.10 molar solution has 0.10 moles in 1000 mL of solution.

100 mL of this solution will then have 0.10 moles / 1000 mL x 100 mL moles of NaHCO3 = 0.01 moles.

84.0 g /mole x 0.01 moles = 0.84 g NaHCO3 needed. (Note: I rounded atomic masses to a whole number).