Answer:
68mL
Step-by-step explanation:
Data obtained from the question include :
V1 (volume of original solution) =?
M1 (Molarity of original solution) = 2.75 M
V2 (volume of diluted solution) = 1.25L
M2 (Molarity of diluted solution) = 0.150 M
Using the dilution formula M1V1 = M2V2 , the volume of the original solution can be obtained as follow:
M1V1 = M2V2
2.75 x V1 = 0.15 x 1.25
Divide both side by 2.75
V1 = (0.15 x 1.25)/2.75
V1 = 0.068L
Now let us convert 0.068L to mL in order to obtain the desired result. This is illustrated below:
Recall: 1L = 1000mL
Therefore, 0.068L = 0.068 x 1000 = 68mL
Therefore, the volume of the original solution is 68mL