How to prepare 28% fuming sulfuric acid
Thread Content
The experiment requires the use of 28% fuming sulfuric acid; currently, the company has 98% sulfuric acid, and it is intended to use this acid along with sulfur trioxide for preparation. I want to know if it’s possible to purchase sulfur trioxide reagent and what the required ratio is for its preparation. I hope fellow sailors can offer some guidance; thanks in advance.
Using 100 g of 98% sulfuric acid, 8.89 g of sulfur trioxide must be added to prepare 100% sulfuric acid; to prepare 28% fuming sulfuric acid, an additional 42.35 g of sulfur trioxide is required； That is, 100 g of 98% sulfuric acid combined with 51.24 g of sulfur trioxide yields 28% fuming sulfuric acid.