What is the percent sulfuric acid in concentrated sulfuric acid?
Concentrated sulfuric acid has 98 % H2SO4.
If zinc is first added to dilute sulfuric acid then concentrated sulfuric acid and acetic acid in which case will the fizzing be most and least?
The most fizzing will come from the concentrated sulfuric acid, then dilute sulfuric acid, then the acetic acid. The amount of fizzing is due to the concentration of H+ in the solution, and concentrated sulfuric acid has the most H+ in solution. The dilute sulfuric acid has less (because it is dilute) and the acetic acid solution has the least of all because it is a weak acid rather than a strong acid. See the…