titration

Question

In titration,if traces of solution in conical flask will increase the concentration of the solution and affect the result of titration?

no.of mole = volume x molarity
If the volume in conical flask is fix, no. of mole and and molarity should be unchanged,
Why the concentration will increase?

Answer 1

the volume in the concial falsk is not fixed.
因為你原本未加入solution的conical flask 己有微量的solution(無法估計),再入measured volume (一定的molarity),在concial flask 的volume 己改變(increase)。所以,total 的no. of mole will increase.
but, you asuume that the volume is still the original. No. of mole of soltion increase + volume unchange =concentration increase