Question #f131c
1 Answer
The concentration of the hydronium ions will be 0.0199 M.
So, you're titrating perchloric acid,
The balanced chemical equation for the neutralization reaction that takes place is
Notice that you have a
If you have more moles of perchloric acid than you have of potassium hydroxide, the solution will still be acidic. If it's the other way around, the solution will be basic.
Use the volumes and molarities of the two solutions to determine how many moles of each you add together
The substance with the fewer moles present in solution will be consumed. At the same time, the substance that remains will have fewer moles present in solution.
Since you have more acid than base present, you'll get
Since perchloric acid is a strong acid, it will dissociate completely in aqueous solution to give
Since 1 mole of
The volume of the solution will now be
Therefore, the concentration of hydronium ions will be
Rounded to three sig figs, the answer will be