Laundry bleach is a solution of sodium hypochlorite (NaClO). To determine the hypochlori...

Laundry bleach is a solution of sodium hypochlorite (NaClO). To determine the hypochlorite (ClO^–) content of bleach (which is responsible for its bleaching action), sulfide ion is added in basic solution. The balanced equation for the reaction is

The chloride ion resulting from the reduction of HClO is precipitated as AgCl. When 50.0 mL of laundry bleach (d = 1.02 g/cm³) is treated as described above, 4.95 g of AgCl is obtained. What is the mass percent of NaClO in the bleach?