Question

Calculate Molarity of a solution having 50 milli moles dissolved in 10 mL of solution.

• A. 5
• B. 0.2
• C. 50
• D. 1

Answer 1

The correct option is A

5

We know that,

Molarity = $\frac{\text{No. of moles}}{\text{No. of litres of solution}}$

No. of milli-moles = ${10}^3\times No.ofmoles$
$\therefore Molarity=\frac{50\times {10}^{-3}}{10\times {10}^{-3}}=5M$