How do I make a 500ml amount of a 0.3% aqueous solution of chlorine dioxide
To calculate how much chlorine dioxide is needed to make a 0.3% aqueous solution, we need to know the concentration of the available chlorine dioxide solution.
Assuming you have a stock solution of chlorine dioxide, we can start by using the formula:
C1V1 = C2V2
where:
C1 = concentration of the stock chlorine dioxide solution
V1 = volume of the stock chlorine dioxide solution needed
C2 = desired concentration of the final solution (0.3%)
V2 = desired final volume of the solution (500 ml)
Since we want to prepare a 0.3% solution, we convert this percentage to decimal form (0.3/100 = 0.003). Now we can substitute the values into the formula:
C1 * V1 = 0.003 * 500 ml
If we assume the stock solution's concentration is given in a percentage form, we need to convert it into a decimal as well. For example, if the stock solution's concentration is 5%, we would convert it to 0.05.
Now let's say your stock solution's concentration is 1%. Substitute the values into the equation:
0.01 * V1 = 0.003 * 500 ml
To solve for V1 (volume of the stock solution needed), divide both sides by 0.01:
V1 = (0.003 * 500 ml) / 0.01
V1 = 15 ml
So, to make a 500 ml solution of 0.3% aqueous chlorine dioxide using a 1% stock solution, you would need to take 15 ml of the stock solution and dilute it to the final volume of 500 ml with water.