Could anyone please help clarify this simple Q?
Q: A student titrated an aliquot of standard sodium carbonate solution with hydrochloric acid in a burette. State whether the concentration determined for the hydrochloric acid would be likely to be higher, lower or unchanged compared with the actual value if the student had previously washed with water, but not dried, the following apparatus:
a) The pipette used to deliver the aliquot of sodium carbonate solution
b) The burette.
For part a), what I reasoned was that, the presence of water would lower the concentration of sodium carbonate solution, and as a result, the V(HCl) needed in the titration to reach the equivalence point would be lower, thus yielding a lower titre - V(HCl). And because C = n/V, since V(HCl) is lower, it would yield a higher concentration. I am not really sure if this is correct as I was thinking that maybe the student would have delivered a lower amount of HCl (and thus a lower amount of moles of HCl) in the pipette as there would be water 'taking up' a few mL's of space.
For part b), I wrote that the water would dilute the HCl (but with no effect on the amount of moles of HCl) which would then give a lower concentration of HCl.
Thanks!