Imagine you were the student lab prep assistant for a Chemistry Lab and you needed to...
Imagine you were the student lab prep assistant for a Chemistry Lab and you needed to provide a standardized solution of NaOH. How would you standardize a solution before putting it out for other students to use?
Homework Answers
standardized solution of NaOH :
Standardization is a process of determining the exact concentration (molarity) of a solution. Titration is the analytical procedure often used in standardization.
The endpoint is determined using an indicator : indicates (signals) the endpoint. The indicator used in this experiment is phenolphthalein.
This experiment involves simple acid-base titration. In this the molarity of a sodium hydroxide solution (NaOH) is determined by titrating a known sample of potassium acid phthalate (KHP; HKC8H4O4) with the NaOH.
- moles of KHP used : from mass of sample and MW
- Volume of NaOH used from end point
- moles of KHP = moles of NaOH in used Volume
- Molarity of NaOH (mol/L) : moles of NaOH in used Volume / Volume of NaOH used (in L)
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