Question

What volume of 1 M sulfuric acid is needed to titrate a 12 ml sample of 0.45 M NaOH?

Answer 1

A `2.7*mL` volume of sulfuric acid is required for equivalence.

Explanation:

We need the stoichiometric equation:

`H_2SO_4(aq) + 2NaOH(aq) rarr Na_2SO_4(aq) + 2H_2O(l)`

And thus we need `1/2` an equiv of sulfuric acid, i.e.

`1/2xx12xx10^-3*Lxx0.45*mol*L^-1=2.7xx10^-3*mol`

`"Volume"="moles"/"concentration"=(2.7xx10^-3*mol)/(1*mol*L^-1)`

`=2.7xx10^-3*L=2.7*mL`..........