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A volume of 40.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 21.7mL of 1.50 M H2SO4 was needed? The equation is

  • pcc - ,

    21.7mL of 1.50M H2SO4 contains .0217*1.50 = .03255 moles of H2SO4

    Each mole of H2SO4 reacts with 2 moles of KOH.

    So, the 40mL of KOH contained 0.0651 moles.

    .0651mole/.040L = 1.6275M

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