CHEM-UA 128 Chapter 13: Atkins CH13
31 May 2016
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When a small amount of strong acid is added, protons are accepted by the ch3coo- ion and removed from solution, so the ph doesn"t change much. When a small amount of strong base is added, the oh- ions are accepted by ch3cooh to form water and ch3coo-: consider nh3 and its salt nh4cl. When a small amount of strong acid is added, protons are accepted by nh3 to form nh4+. The concentration of the weak acid and the salt solution individually must be given. Write an expression for ka showing the proton transfer equilibrium of the acid; Rearrange in terms of [h3o+], substituting [a-] with the initial concentration of salt solution and [ha] with initial concentration of weak acid: calculating the concentration of a buffered solution: Consider the addition of a strong alkali to a buffer of weak acid and its salt. First, find the equation of the acid reacting with the base.
