If it takes 32.0 mL of 0.100 M HCl to titrate 25.0 mL of a Ba(OH)₂ solution to the equivalence point, what is the molarity of the original Ba(OH)₂ solution?

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Quizplus · Accepted Answer

The balanced equation is 2 HCl + Ba(OH)₂ → BaCl₂ + 2 H₂O. Moles of HCl = 0.032 L × 0.100 M = 0.0032 mol. Since the ratio is 2:1, moles of Ba(OH)₂ = 0.0032 mol / 2 = 0.0016 mol. Molarity of Ba(OH)₂ = 0.0016 mol / 0.025 L = 0.064 M.

If It Takes 32