Question

If you use 0.2 ml of 3E-4 M bromothymol blue solution and dilute it to 10 ml, what is the resulting molarity of the solution?

Answer 1

For this question we are using a formula that will show us what happens to a substance when it undergoes dissolution, the formula is:

M1*V1 = M2V2

Where:

M1 = initial concentration, 3*10^-4 M

V1 = initial volume, 0.2 mL

M2 = final concentration, ?

V2 = final volume, 10 mL

Now we add the values into the formula:

3*10^-4 * 0.2 = M2*10

6*10^-5 = 10M2

M2 = 6*10^-6, or 0.000006 M, this will be the final concentration