What is the molarity of 20 g of NaOH in

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Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Solutions

Question:

What is the molarity of 20 g of NaOH in 500 ml solution?

Options:

0.5 M

0.75 M

1 M

1.25 M

Correct Answer:

1 M

Explanation:

20 g of NaOH (0.5 mole)
molecular mass of NaOH is 40.
Volume of solution = 500 ml
M = \(\frac{0.5}{500}\) x 1000

M = 0.5 x 2 = 1