Question

calculate the volume in liters of a 0.237m potassium dichromate solution that contains 350. mmol of potassium dichromate (k₂cr₂o₇). be sure your answer has the correct number of significant digits.

Explanation:

Step1: Convert mmol to mol

We know that $1\ mol = 1000\ mmol$. So, $n = 350\ mmol=\frac{350}{1000}\ mol= 0.350\ mol$.

Step2: Use the molarity formula

The molarity formula is $M=\frac{n}{V}$, where $M$ is molarity, $n$ is the number of moles, and $V$ is the volume. We need to solve for $V$, so $V=\frac{n}{M}$. Given $M = 0.237\ M$ and $n=0.350\ mol$. Then $V=\frac{0.350\ mol}{0.237\ mol/L}$.

Step3: Calculate the volume

$V=\frac{0.350}{0.237}\ L\approx1.48\ L$.

Answer:

$1.48$