Question

Calculate the number of grams of solution necessary to provide 68.5 g of solution chloride from a 12.0% sodium chloride solution.

Answer 1

12% means 12 grams of NaCl in every 100 g solution.

68.5 g of NaCl = xg of solution

cross multiplying,

x = $\dfrac{100×68.5}{12}$ = 570.83g

Therefore, approximately 571 grams of the solution is needed to provide 68.5 g of sodium chloride