How to prepare 100mL of 3% w/w Hydrogen Peroxide from 30% w/w Hydrogen Peroxide?Specific Gravity of 30%w/w Hydrogen Peroxide is 1.11g/mL.

Can you please show the calculation steps? Thanks.

if u want 50 ml of H2O2 %3

30-3=27
3/1.11=2.7 29.7 2.7
2.7+27=29.7 50 x x=4.54 ml from H2O2%30

Please Give Response and Clear Calculation

if u want 50 ml of H2O2 %3
30-3=27
3/1.11=2.7 29.7 2.7 (not understand this part)
2.7+27=29.7 50 x x=4.54 ml from H2O2%30 how would the 4.54ml,Explain

How to dilute 30%hydrogen per oxide (H2O2) into 3%? What diluent should be used?

To prepare 100mL of 3% w/w hydrogen peroxide from 30% w/w hydrogen peroxide, you need to calculate the amount of 30% hydrogen peroxide solution required.

Here are the steps to calculate it:

Step 1: Determine the desired mass of hydrogen peroxide in the final solution:
- 100mL of 3% w/w solution means you need 3g of hydrogen peroxide in the final solution.
- The desired mass of hydrogen peroxide is 3g.

Step 2: Determine the mass of the 30% hydrogen peroxide solution needed:
- The solution density (specific gravity) given is 1.11g/mL. This means that 1mL of the solution weighs 1.11g.
- To find the mass of the 30% hydrogen peroxide solution, use the formula:
Mass (g) = Volume (mL) × Specific Gravity (g/mL).
- Volume (mL) = Desired mass (g) / Specific Gravity (g/mL).
- Substituting the values:
Volume (mL) = 3g / 1.11 g/mL = 2.703 mL.

Step 3: Determine the volume of the 30% hydrogen peroxide solution needed:
- The percentage concentration of the 30% hydrogen peroxide means it contains 30g of hydrogen peroxide in every 100g of solution.
- The mass of hydrogen peroxide needed (from Step 1) is 3g.
- To find the volume of the 30% hydrogen peroxide solution needed, use the formula:
Volume (mL) = (Mass (g) × 100 mL) / concentration (%).
- Substituting the values:
Volume (mL) = (3g × 100 mL) / 30 = 10 mL.

Therefore, you need 10 mL of the 30% w/w hydrogen peroxide solution to prepare 100 mL of 3% w/w hydrogen peroxide solution.

Note: Please ensure to handle hydrogen peroxide with care as it is a hazardous substance.

30% w/w is 30 g/100g soln.

So you want 1/10 that.
Dilute 10 g (that's 10/1.11 = 9.00 mL) and add H2O to 100 g total = 3% w/w The volume should be very close to 100 mL.