Chemistry, 20.08.2021 02:20 shollydot1379
Standardized NaOH solutions are typically restandardized if left unused for more than a week or two. The main concern is exposure to the atmosphere (thus it is important to seal the bottle well each time, and not leave it open during a lab period). Why is exposure to the atmosphere a concern (be specific)?
1. If a titration net volume should be 20.00 mL and a student accidentally goes one drop past this endpoint (~0.05 mL), what will the percent error in this titration be?
2. If the incorrect titration net volume described in question 3 is used to standardize an NaOH solution, will the calculated [NaOH] be higher or lower than the true value of that solution’s concentration? Explain briefly.
Answers: 3
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Standardized NaOH solutions are typically restandardized if left unused for more than a week or two....
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