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Acid-Base Titrations Strong Acid with a Strong Base – Titration Curve Interpretation Textbook Reference pp. 595 - 599. Shape of titration curve….
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Acid-Base TitrationsStrong Acid with a Strong Base – Titration Curve InterpretationTextbook Reference pp. 595 - 599
Shape of titration curve… Beginning – pH rises gradually as base added, pH remains relatively constant event though small amounts of base are being added – first amount of titrants are immediately consumed, leaving excess of strong acid
Shape of titration curve… After this flat region, there is a very rapid increase in pH for a very small additional volume of titrant. The MIDPOINT of the sharp increase in pH occurs at a pH of 7.00 – the equivalence point of the reaction and corresponds to the endpoint of titration (with an appropriate indicator) – the neutralization point
Shape of titration curve… Finally, the curve bends to reflect a more gradual increase in pH as excess base is added
Chemical Changes During a Strong Acid/Strong Base Titration In a titration, 20.0 mL of 0.300 mol/L HCl(aq) is titrated with standardized 0.300 mol/L NaOH(aq). What is the amount of unreacted HCl(aq) and the pH of the solution after the following volumes of NaOH(aq) have been added? (a) 0 mL (b) 10.0 mL (c) 20.0 mL (d) 21.0 mL