A 25mL solution of 0.25M NaOH is titrated until neutralized into a 25mL sample of HNO3. What is the concentration of the HNO3?
The reaction between NaOH and HNO3 can be represented as:
NaOH + HNO3 -> NaNO3 + H2O
Since the reaction is 1:1, it can be concluded that the moles of NaOH will be equal to the moles of HNO3 at the equivalence point.
First, calculate the moles of NaOH used in the titration:
0.25M NaOH * 0.025L = 0.00625 moles of NaOH
Since the moles of NaOH will be equal to the moles of HNO3:
0.00625 moles of HNO3 / 0.025L = 0.25M
Therefore, the concentration of the HNO3 solution is 0.25M.