Which one of the following is a 1 molar solution?

Jul 18, 2017

We know the definiton of concentration which is $C = \frac{n}{V}$
$V$ in $L i t r e s$

Explanation:

Let's calculate the consentration of each solution
A)
${n}_{\text{KCl}} = \frac{m}{M r} = \frac{74.6}{74.6} = 1 m o l$

$C = \frac{n}{V} = \frac{1}{0.1} = 10 M$

B)
${n}_{\text{NaOH}} = \frac{m}{M r} = \frac{10}{40} = 0.25 m o l$

$C = \frac{n}{V} = \frac{0.25}{0.25} = 1 M$

So the correct solution is the B)