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STD 12 -1. Solution and colligative properties — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 -1. Solution and colligative properties4 Marks
MCQ
If $1\,M$ and $2.5\,litre$  $NaOH$ solution is mixed with another $ 0.5\,M$ and $3\,litre$ $ NaOH$  solution, then molarity of the resultant solution will be ........ $M$.
  • A
    $1.0$
  • ✓
    $0.73$
  • C
    $0.80$
  • D
    $0.50$
✓

Answer

Correct option: B.
$0.73$
b
(b) $(2.5 \times 1 + 3 \times 0.5) = {M_3} \times 5.5$

or   $2.5 + 1.5 = {M_3} \times 5.5$  or  ${M_3} = \frac{4}{{5.5}} = 0.73\,M$

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