Question

Volume of conc acud require to prepare 2.5l of 0.50m h2so4

Answer 1

2NaOH+H2SO4---------->Na2SO4+2H2O 80gm NaOH reacts with=98 gm H2SO4 2.5gm NaOH reacts with

=2.5 x 98/80=3.0625 gm H2SO4

Now 1000 ml.of 2.5 M H2SO4 contains

= 2.5 x 98 gm H2SO4= 245 gm

So 245 gm H2SO4 is present in=1000 ml 3.0625 gm H2SO4 is present in

=1000 x 3.0625/245= 12.5 ml.

So 12.5 ml.of 2.5M H2SO4 is required to neutralise 2.5 gm of NaOH.