How much stock solution of hydrogen peroxide 8% will you need to make 320ml of hydrogen peroxide 2% solution? ____
To determine the amount of stock solution of hydrogen peroxide 8% needed to make a 320ml hydrogen peroxide 2% solution, we can use the equation:
(C1 * V1) = (C2 * V2)
Where:
C1 = concentration of the stock solution (8%)
V1 = volume of the stock solution to be used
C2 = desired concentration of the final solution (2%)
V2 = final volume of the solution (320ml)
Substituting the values into the equation, we have:
(8% * V1) = (2% * 320ml)
To solve for V1, we rearrange the equation:
V1 = (2% * 320ml) / 8%
Calculating this expression:
V1 = (2/100 * 320ml) / (8/100)
V1 = (6.4ml) / (0.08)
V1 = 80ml
So, you will need 80ml of the hydrogen peroxide 8% stock solution to make 320ml of hydrogen peroxide 2% solution.