Homework Answers
Solution:
1) Decrease in concentration of acid
If burett funnel is not removed, then it may cause error in volume measurement of burret because the drops which are attached to funel increases the volume of burret.
2) The concentration of unknown acid increases
Air bubble in burett causes an indication of addition of higher volume of base, hence the calculated concentration of acid increases.
3) The concentration increases
Overdilluted HCl has causes an error during titration. It causes addition of large amount of base and hence calculated concentration increaeses.
4) Decrease the calculated concentration
A wet flask contains lesser volume of acid, hence less volume of base is required. This will causes decrease the concentration of unknown acid.
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