Molarity is the ratio of the moles and the volume of the solution in liters. The molarity of the 0.2 mole salt is 0.1 M.
The molarity of the solution is the molar concentration of the moles of the solute dissolved in a liter of solution. It is given as,
[tex]\rm Molarity (M) = \rm \dfrac{\text{moles of solute (n)}}{\text{volume (V) in liters}}[/tex]
Given,
Moles (n) of the salt = 0.2 mol
The volume of the solution (V) = 2 L
Substituting values in the above equation:
[tex]\begin{aligned} \rm M &= \dfrac{0.2}{2}\\\\&= 0.1 \;\rm M\end{aligned}[/tex]
Therefore, 0.1 M is the molarity of the sample.
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