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NEET2009ChemistryIonic EquilibriumActual

What is the [ OH ⁻ ] in the final solution prepared by mixing 20.0 ~mL of 0.050 M HCl with 30.0 ~mL of 0.10 M Ba ( OH )₂ ?

Options

  1. A0.10 M
  2. B0.40 M
  3. C0.0050 M
  4. D0.12 M

Correct answer

A. 0.10 M

Step-by-step solution

Number of milliequivalents of HCl =20 0.050 1=1 Number of milliequivalents of Ba ( OH )₂ =2 30 0.10=6 [ OH ⁻ ] of final solution aligned & milliequivalents of Ba ( OH )₂ & = - milliequivalents of HCl total volume & = 6-1 50 =0.1 M & aligned

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