If 25ml of 3M HNO3 AND 75ml of 4M HNO3 ar

2 answers

What is your question?
Probably you want to know the (H^+).
mols of the 3M HNO3 = M x L = ?
mols of the 4M HNO3 = M x L = ?
M of the mixture is M = total mols/total L
If you want to know the pH it is pH = -log(HNO3)