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

1 Answer
anor277
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#...

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