Question

Calculate the final concentration of 50 ml of 0.25 mol. 1 NaCI made to a final volume of 250 ml.

Answer 1

The final concentration of NaCl is 0.1 mol/L.

50 mL x 0.25 mol/L = 12.5 mol

250 mL x 0.1 mol/L = 25 mol

12.5 mol/25 mol = 0.1 mol/L