Answer:
The answer to your question is given below.
Explanation:
To obtain the desired solution needed, we must obtain the volume of the stock solution required to prepare the solution. This is illustrated below:
Step 1:
Data obtained from the question include the following:
Volume of stock solution needed (V1) =..?
Molarity of stock solution (M1) = 0.5M
Volume of diluted solution (V2) = 500mL
Molarity of diluted solution (M2) = 0.1M
Step 2:
Determination of the volume of the stock solution needed.
This can be obtained by using the dilution formula as shown below:
M1V1 = M2V2
0.5 x V1 = 0.1 x 500
Divide both side by 0.5
V1 = (0.1 x 500) /0.5
V1 = 100mL
Therefore, to obtain the desired solution, measure 100mL of the 0.5M stock solution and dilute with water to the mark.
