8.4 Calculations Involving Acidic Solutions.pptx - Calculations Involving Acidic Solutions Chapter 8.4 Strong Acids • Since strong acids almost

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Calculations Involving Acidic Solutions Chapter 8.4
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Strong Acids Since strong acids almost completely ionize in water, we can assume that the concentration of hydrogen ions is equal to the concentration of the acid. Ex: A solution of hydrochloric acid has a concentration of 0.1mol/L. Calculate: a) [H + ] b) [OH - ] c) pH d) pOH
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Weak Acids and Percent Ionization Percentage ionization is the percentage of a solute that ionizes when it dissolves in a solvent OR
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Example Calculate the K a of hydrofluoric acid, HF (aq) , if a 0.100mol/L solution at equilibrium has a percent ionization of 7.8%.
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Using K a to find pH Calculate the pH of a 0.10mol/Lacetic acid solution. K a for acetic acid is 1.8x10 -5 .
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Using pH to find K a A student prepares a 0.20mol/L aqueous solution of ascorbic acid, and measures its pH as 2.40. Based on this evidence, what is the K a of ascorbic acid?
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Polyprotic Acids A monoprotic acid is an acid that possesses only one
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