In a tube containing 6 ml of a solution of compound A at 1 m

In a tube containing 6 ml of a solution of compound \"A\" at 1 mg/ml, and 6 ml of a solution of compound \"B\" at 2 mg/ml:

What is the final concentration (mg/ml) of \"A\"?

What is the final concentration (mg/ml) of \"B\"?

Solution

Use the formula C1V1 = C2V2

C1 = 1 mg/ml (initial concentration of A)

V1 = 1 ml (volume of A)

C2 = ? (the final concentration (mg/ml) of \"A\")

V2 = 6 ml (Final volume of the test tube)

Now, C2 = 1mg/6ml or 0.166 mg/ml

Similarly,

C1 = 2 mg/ml (initial concentration of B)

V1 = 1 ml (volume of A)

C2 = ? (the final concentration (mg/ml) of \"A\")

V2 = 6 ml (Final volume of the test tube)

C2 = 2*1/6 = 0.33 mg/ml