I have to prepare a H3PO4 + H2SO4 mixture, I have the method to make this mixture but I would like to know the ratio of this mixture, can somebody help me i this??
Mix 100ml of 85% of H3PO4 + 100 ml 96% H2SO4 then add in 400 ml of distilled water.
What is the purpose of this mixture?? ( determination of total Fe2+ in pickling solution)
Thanks.