Question

1. 20.0 mL sample of bleach is diluted to 100 mL. A 25.0 mL sample of this solution is analyzed according to the procedure of this experiment. If 40.0 mL of 0.15 M Na2S2O3 is needed to reach the end point, what is the percent by weight of NaOCl in the original sample? Assume the density of bleach to be 1.08 g/mL

2. A bleach solution has a weight percent of 6.5% (density = 1.09 g/L) was diluted to 0.040 M, calculate the dilute factor?

Answer 1

1. 6.20833333%.

2. 23.7751678.