Molarity of aqueous solution of NaOH having mole fraction 0.2 and density 1 g/mL.

Engineering

Chemistry

Concentration Terms

Question

8.9

13.8

12.2

10.1

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Number of moles of NaOH = 0.2
Number of moles of H₂O = 0.98

$\frac{0 .2}{\frac{0 .2 \times 40 + 0 .98 \times 18}{1}} \times 1000 = 8 .9$