If a sulfuric acid solution is reported as "3 Normal", what is its molar concentration?

1 Answer
Jan 17, 2018

Is 1.50*mol*L^-1 with respect to "sulfuric acid"....

Explanation:

"Normality" is an old-fashioned word, and refers to the number of equivalents of base an acid requires for neutrality...

Of course "sulfuric acid", and "phosphoric acid" ARE diprotic acids...and will require 2 equiv of base for equivalence...

H_2SO_4(aq) + 2NaOH(aq) rarr underbrace(Na_2SO_4(aq) + 2H_2O(l))_"a normal solution"

H_3PO_4(aq) + 2NaOH(aq) rarr underbrace(Na_2HPO_4(aq) + 2H_2O(l))_"a normal solution"

And so if the sulfuric acid is reported at 3*N...its actual concentration is 1.50*mol*L^-1...