85.0 grams of potassium bromide are to be used to produce a 0.300 M solution.What will be the total volume of this solution?
A)2.38 L
B)2.83 L
C)283 L
D)0.214 L
E)0.420 L

Question

Quizplus · Accepted Answer

To find the total volume of the solution, first calculate the number of moles of potassium bromide (KBr). The molar mass of KBr is approximately 119 g/mol (39 for K and 80 for Br). $$ \text{Moles of KBr} = \frac{85.0 \text{ g}}{119 \text{ g/mol}} \approx 0.714 \text{ moles} $$Given the concentration (Molarity, M) is 0.300 M, use the formula:$$ \text{Volume} = \frac{\text{Moles of solute}}{\text{Molarity}} = \frac{0.714}{0.300} $$$$ \text{Volume} \approx 2.38 \text{ L} $$Therefore, the total volume of the solution is approximately 2.38 L.

850 Grams of Potassium Bromide Are to Be Used to Produce