What mass of tin was used to make the tin solution?

Question

In an experiment, a sample of tin metal was dissolved in nitric acid to produce 25.00 mL of solution containing Sn²⁺. Titration analysis resulted in the calculation that the concentration of Sn²⁺ in this solution was 0.60 mol/L.

b.    What mass of tin was used to make the tin solution?

 Find the mass of the Sn_(s) in g: (give your answer to 2 decimal places)

Answer 1

0.60 mol Sn²⁺ / L x 0.02500 L = 0.015 mols Sn²⁺

atomic mass Sn²⁺ = 118.7 g/mol

mass Sn²⁺ = 0.015 mols x 118.7 g/mol = 1.78 g Sn²⁺