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Figure 7.4.3: The Titration of (a) a Weak Acid with a Strong Base and (b) a Weak Base with a Strong Acid. (a) As 0.200 M NaOH is slowly added to 50.0 mL of 0.100 M acetic acid, the pH increases slowly at first, then increases rapidly as the equivalence point is approached, and then again increases more slowly.
Sep 29, 2021 · Answer. Step 1: Write down the equation for the partial dissociation of ethanoic acid. CH3COOH (aq) ⇌ H+ (aq) + CH3COO- (aq) Step 2: Write down the equilibrium expression to find Ka. Step 3: Simplify the expression. The ratio of H + to CH 3 COO - is 1:1. The concentration of H + and CH 3 COO - is, therefore, the same.
- Titrations of Strong Acids and Bases. Figure \(\PageIndex{1a}\) shows a plot of the pH as 0.20 M \(\ce{HCl}\) is gradually added to 50.00 mL of pure water.
- Titrations of Weak Acids and Bases. In contrast to strong acids and bases, the shape of the titration curve for a weak acid or a weak base depends dramatically on the identity of the acid or the base and the corresponding \(K_a\) or \(K_b\).
- Calculating the pH of a Solution of a Weak Acid or a Weak Base. As explained discussed, if we know \(K_a\) or \(K_b\) and the initial concentration of a weak acid or a weak base, we can calculate the pH of a solution of a weak acid or a weak base by setting up a ICE table (i.e, initial concentrations, changes in concentrations, and final concentrations).
- Calculating the pH during the Titration of a Weak Acid or a Weak Base. Now consider what happens when we add 5.00 mL of 0.200 M \(\ce{NaOH}\) to 50.00 mL of 0.100 M \(CH_3CO_2H\) (part (a) in Figure \(\PageIndex{3}\)).
This chemistry video tutorial provides a basic introduction to acid base titrations. It shows you how to calculate the unknown concentration of an acid solu...
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Sep 22, 2023 · Figure 5.4.1 shows the data in Table 5.4.1 plotted as a normal calibration curve. Although the data certainly appear to fall along a straight line, the actual calibration curve is not intuitively obvious. The process of determining the best equation for the calibration curve is called linear regression.
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Acid-Base Titration Curves. Acid-base titration, the most frequently employed method of titration, adheres to certain curve trends established by the acid and the base involved. The pH of the solution at the equivalence point depends on the characteristics of the analyte and the titrant. The following combinations produce:
