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NEET2011ChemistryIonic EquilibriumActual

25 ~mL , 0.2 MCa ( OH )₂ is neutralised by 10 ~mL of 1 MHCl . Then pH of resulting solution is

Options

  1. A1.37
  2. B9
  3. C12
  4. D7

Correct answer

D. 7

Step-by-step solution

Number of millimoles of base (i.e., . Ca ( OH )₂ )=N₁ V₁=2 M₁ V₁=2 0.2 25=10 Number of millimoles of acid (i.e., HCl )= N ₂ V₂ =10 1=10 As, no. of millimoles of acid = no. of millimoles of base Acid is completely neutralised by base forming a neutral solution. pH of the resulting solution =7 .

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