Question

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

Answer 1

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`...