Can you have a -ve pH or a pH value of above 14??? (1 Viewer)

[renny 123]

I had a question that read, caluclate the pH of a solution in which [H30+] is 1.3 mol/L

using -log (1.3) i got the negative answer -0.11. Is this correct?

Another question read, calculate the pH solutuons in which [0H-] is 1.2 mol/L

using -log (1.2) = -0.079 and then [H+] = 14- -0.079 = 14.08. Is this correct?

 

[Timothy.Siu]

think so

 

[brenton1987]

Anecdote: Some dude at my high school owned themselves by coming in contact with -16pH hydrochloric acid.

That is absolute crap.

Hydrogen chloride gas is soluble in water upto 720 g^.L^-1

C = (m)(V) / (F)
C = (720)(1.000) / (36.46)
C = 19.75 mol^.L^-1

pH = -log(19.75)
pH = -1.30

The strongest known acid is Fluroantimonic acid which can have a pH as low as -25.

 

[emmjee92]

yeah you can because an acid with pH 0 has 1M of acid, so if there is more than 1M of acid, pH will be negative

 

[Kaatie]

yeh correct numbers