Answer to Question #162550 in General Chemistry for Sage Topaz

Question

How many grams of KOH must be added to 33.6 g of water to prepare a 3.85 % solution of KOH?

Answer 1

3.85 % solution of KOH means,

100 g of water contain 3.85 g KOH

1 g of water contain (3.85/100)g KOH

33.6 g water contain    

            = (33.6×3.85/100)g

            ≈1.294 g

            

Hence, 1.294 grams of KOH must be added to 33.6 g of water to prepare a 3.85 % solution of KOH