Engineering Board Exam Reviewer · Chemistry · medium

How many mL of 0.2 M NaOH are needed to neutralize 25 mL of 0.1 M HCl?

  1. 12.5 mL
  2. 50.0 mL
  3. 25.0 mL
  4. 6.3 mL

Answer

A. 12.5 mL

Solution

MaVa = MbVb (1 : 1 reaction) Vb = 0.1(25)/0.2 = 12.5 mL.

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