The amount of hydrogen peroxide (H2O2) in a sample of hair bleach was determined by titration with a standard KMnO4 solution. What was the mass percent of hydrogen peroxide in hair bleach sample, if 27.6 g of hair bleach required 86.4 mL of 0.105M KMnO4 to reach the endpoint of titration?

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A: Molarity of KOH=2.815 M Volume of KOH=191.05 mL =191.05/1000 =0.19105 L  [1 L = 1000 mL] Volume of…

Q: 2 The active agent in many hair bleaches is hydrogen peroxide. The amount of H₂O2 in 13.7-g of hair…

A: given, amount of hair bleach = 13.7 g For KMnO4 molarity = 0.174 M volume = 48.9 mL

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Q: 1. When H2SO4(aq) was reacted with NaOH(aq) in the titration, why was a precipitate not formed? 2.…

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Q: Ca(OH)2 +   HCl ->  CaCl2 +  H2O

A:

Q: KHP (potassium hydrogen phthalate, KHC8H4O4

A: Molarity = Moles of solute/ volume of solution (in L) Moles = Mass in gm/molar mass

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