preparation of hydrogen peroxide - (Dec/04/2012 )
I could really use your help please.
I would like to prepare a 3% solution of hydrogen peroxide (H2O2) equal to 0.88M. My stock bottle of H2O2 is at 9.8M (in liquid form).
Could you help me calculate how to get the desired 3% solution of H2O2 that will be equal to 0.88M?
Thank you in advance
stock h2o2 is usually 30%. just dilute it 10x.
1) You could go to a grocery store or pharmacy and pick up a bottle of hydrogen peroxide -- the "home use" version is 3%.
2) If you want to dilute your stock, you need to dilute by 9.8 moles/liter divided by 0.88 moles/liter or by a factor of 11.1.
So, to make 1 liter, you need 1/11.1 liters of stock = 90 ml of stock, with the remainder, 910 ml, water.
Concentrated hydrogen peroxide is quite hazardous. Be careful.
Thank you for your replies, it's been really helpful for me