Consider 1.0 L of a solution which is 0.55 M NH4Cl and 0.80 M NH3. (Ka for NH4+ = 5.6×10-10). Part 1 Calculate the pH of this solution. Part 2 Calculate the pH after 0.10 mol of HCl has been added to the original buffer solution. Assume no volume change on addition of HCl. Part 3 Calculate the pH after 0.20 mol of NaOH has been added to the original buffer solution.

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Q: Consider a buffer solution that is 0.47 M HCN and 0.47 M NaCN. (Ka(HCN) = 4.9 × 10−10) Calculate…

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Q: Can someone explain to me why this example is a buffer? I don't understand it.

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.