Standardized NaOH solutions are typically restandardized if leftunused for more than a week or two. The main concern is exposure tothe atmosphere (thus it is important to seal the bottle well eachtime, and not leave it open during a lab period). Why is exposureto the atmosphere a concern (be specific)?
If a titration net volume should be 20.00 mL and a studentaccidentally goes one drop past this endpoint (~0.05 mL), what willthe percent error in this titration be?
If the incorrect titration net volume described in question 3 isused to standardize an NaOH solution, will the calculated [NaOH] behigher or lower than the true value of that solution’sconcentration? Explain briefly.
