Question

what is the molarity of 2 mol of ki dissolved in 1 l water?
a. 3 m
b. 0.5 m
c. 1 m
d. 2 m

Explanation:

Step1: Recall molarity formula

Molarity ($M$) = $\frac{n}{V}$, where $n$ is the number of moles of solute and $V$ is the volume of the solution in liters.

Step2: Identify values

Here, $n = 2$ mol (moles of KI) and $V=1$ L (volume of water, assuming volume change is negligible and volume of solution is 1 L).

Step3: Calculate molarity

$M=\frac{2\ mol}{1\ L}=2\ M$

Answer:

D. 2 M