I dilute various acids incorrectly, to see what happens. I also add water to a base and a salt for comparison. Video with reaction: https://www.youtube.com/watch?v=_f0vK8Wffgg Before the bug the 2nd beaker from the left (medium beaker) was at least 99% sulfuric acid and the one in the large beaker was around 96 to 98%. The nitric was very pure 99%+ (anhydrous). The water was from rain collected over painted steel and the other chemicals ( HCl, NaOH & NH4NO3) were industrial grade.