What volume of 5.00 × 10^-3 M HNO₃ is needed to titrate 100.00 mL of 5.00 × 10^-3 M Ca(OH)₂ to the equivalence point? A)12.5 mL B)50.0 mL C)100.mL D)200.mL

Question

Quizplus · Accepted Answer

The balanced chemical equation is 2HNO₃ + Ca(OH)₂ → Ca(NO₃)₂ + 2H₂O. This shows that 2 moles of HNO₃ react with 1 mole of Ca(OH)₂. Therefore, the volume of HNO₃ needed is twice that of Ca(OH)₂, which is 200 mL.

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