Problem: Calculate the molarity of hypochlorite ion when 1.00 mL of commercial bleach is added to 25.00 mL of dye solution.

FREE Expert Solution

commercial bleach contains 5.25% sodium hypochlorite (NaOCl) by mass

density = 1.08 g/mL

assume 100 g solution:

mass NaOCl = 5.25 g
molar mass NaOCl = 74.44 g


Calculate moles of the hypochlorite ion, OCl-:

NaOCl → Na+ + OCl-

moles NaOCl=5.25 g NaOCl×1 mol NaOCl74.44 g NaOCl×1 mol OCl-1 mol NaOCl

moles OCl- = 0.07052 mol


Calculate volume (in L) of solution:

volume=100 g×1 mL1.08 g×10-3 L1 mL

volume = 0.0926 L


Calculate molarity of the solution:

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Problem Details

Calculate the molarity of hypochlorite ion when 1.00 mL of commercial bleach is added to 25.00 mL of dye solution.

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