Problem: A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume (in mL) of household bleach that should be diluted with water to make 500.0 mL of a pH = 10.26 solution.

FREE Expert Solution

Sodium hypochlorite dissociates in the solutions as:

NaOCl → Na+ + OCl-


 OCl-  is the conjugate base of HOCl


The dissociation of HOCl is as follows:

HOCl(aq) + H2O(l)  H3O+(aq) + OCl(aq); Ka = 3.5 x 10-8



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Problem Details

A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume (in mL) of household bleach that should be diluted with water to make 500.0 mL of a pH = 10.26 solution.

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