Acids & Bases - Chemistry
Acids & Bases - Chemistry
Acids & Bases - Chemistry
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<strong>Acids</strong> & <strong>Bases</strong> 28Because K a is fairly small (10 −5 ) we know thatacetic acid is a weak acid and that we are onlygoing to make small quantities of H + . That meansthat x should be a rather small number as well.This in turn means that 0.1 − x should be ≈ 0.1.Our assumption, therefore, will be that x will bemuch less than 0.1 M (initial concentration ofacid). This really simplifies the algebra:( x)( x)= 1×10−5(0.1 − x)assume that x
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