4u c8.4 Titration notes

4u c8.4 Titration notes - HCl acid, and NaOH base are...

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Titration – A Chemical analysis performed to find the concentration of an aqueous solution. – involves the progressive addition of a solution of known concentration into a solution of unknown concentration. Sample – solution with unknown concentration. – solution being analyzed in a titration. Titrant – solution with known concentration used to assess the concentration of the unknown solution. – placed in the burette during a titration. Primary Standard – solution used to measure the concentration of the titrant = standing the titrant. – common titrant such as
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Unformatted text preview: HCl acid, and NaOH base are unstable. HCl (aq) vapourize in room temperature, therefore concentration decreases in time. NaOH (aq) is hygroscopic = gains mass by absorbing water moisture from air. primary standard however, are chemicals in pure and stable form for which accurate concentration can be prepared. For Example, potassium hydrogen phthalate, KHC 7 H 4 O 4 acid sodium carbonate, Na 2 CO 3 base Equivalence point vs. End point Titration 3 cases a) strong acid vs. strong base b) weak acid vs. strong base c) strong acid vs. weak base...
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This note was uploaded on 05/31/2011 for the course CHEM 4U taught by Professor Jargin during the Spring '11 term at York University.

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