Titration and p H Curves Titration and p

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Titration and p. H Curves.

Titration and p. H Curves.

Titration and p. H Curves. u. A titration curve is a plot of p.

Titration and p. H Curves. u. A titration curve is a plot of p. H vs. volume of added titrant.

Parts of a titration u Titrant- acid or base of known concentration that is

Parts of a titration u Titrant- acid or base of known concentration that is added to the substance being analyzed. u Analyte- the substance that is being analyzed, or your unknown.

u. Because Titrations titrations involve small concentrations, and m. L are of often used

u. Because Titrations titrations involve small concentrations, and m. L are of often used in titrations, and millimoles, or mmol. u. Molarity = mmol/m. L u. The equivalence point is when moles of titrant are equal to moles of analyte. u. All volumes in a titration are considered to be additive. u. Always label the equivalence point and for weak acid or base titrations the half equivalence point, where p. H = p. Ka.

Strong Acid-Strong Base Titration Curves. u Before the addition. u p. H is calculated

Strong Acid-Strong Base Titration Curves. u Before the addition. u p. H is calculated directly from the initial concentration. u Additions before the equivalence point. u Construct a “stoichiometry” reaction table. Determine MOLES of acid in excess (not neutralized). u Divide MOLES by the TOTAL VOLUME to obtain [H 3 O+]. u Calculate the p. H.

Strong Acid-Strong Base Titration Curves. u. Additions at the equivalence point. u. The p.

Strong Acid-Strong Base Titration Curves. u. Additions at the equivalence point. u. The p. H ALWAYS is equal to 7. 00 when [H 3 O+] = [OH-]. u. Additions beyond the equivalence point. u. Construct a “stoichiometry” reaction table. Determine MOLES of base in excess (not neutralized). u Divide MOLES by the TOTAL VOLUME to obtain [OH-]. u Calculate the p. OH, then the p. H.

Problem u 50. 0 m. L of 0. 200 M HNO 3 are titrated

Problem u 50. 0 m. L of 0. 200 M HNO 3 are titrated with 0. 100 M Na. OH. u. Calculate the p. H after the additions of 0. 0, 10. 0, 20. 0, 50. 0, 100. 0, 150. 0, and 200. 0 m. L samples of Na. OH. u. Then, construct a titration curve and label it properly.

Strong Acid Strong Base Problem u 50. 0 m. L of 0. 500 M

Strong Acid Strong Base Problem u 50. 0 m. L of 0. 500 M HCl are titrated with 0. 250 M Na. OH. u. Calculate the p. H after the additions of 0. 0, 10. 0, 20. 0, 50. 0, 100. 0, 150. 0, and 200. 0 m. L samples of Na. OH. u. Then, construct a titration curve and label it properly.

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