Exciting Chemistry Problem to Solve!
How can we calculate the volume of a solution needed to make a new concentration?
What volume of a 3.50 M Na3PO4 solution would you use to make 1.50 L of a 2.55 M Na3PO4 solution?
A. 1.09 L
B. 2.06 L
C. 13.4 L
D. 0.917 L
The answer is A. 1.09 L
Calculation of the Volume of Solution Needed
To calculate the volume of a 3.50 M Na3PO4 solution needed to make 1.50 L of a 2.55 M Na3PO4 solution, we can use the formula:
C1V1 = C2V2
Where:
C1 = concentration of the initial solution
V1 = volume of the initial solution
C2 = concentration of the final solution
V2 = volume of the final solution
Given data:
C1 = 3.50 M
V1 = unknown
C2 = 2.55 M
V2 = 1.50 L
Plugging in the values to the formula:
3.50(V1) = 2.55(1.50)
3.50V1 = 3.825
V1 = 3.825 / 3.50
V1 = 1.09 L
Therefore, the volume of a 3.50 M Na3PO4 solution needed to make 1.50 L of a 2.55 M Na3PO4 solution is 1.09 L. Choose option A!