scotty 4 - Chemistry Notes Weak Acids Hydrofluoric acid...

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Weak Acids Hydrofluoric acid (HF) Sulfurous acid (H 2 SO 3 – diprotic) Acetic acid (HC 2 H 3 O 2 ) Carbonic acid (H 2 CO 3 – diprotic) Formic acid (HCHO 2 ) Phosphoric acid (H 3 PO 4 – triprotic) Table 15.9 pH of Salt Solution 697 ANION CATION Conjugate base of strong acid Conjugate base of weak acid Conjugate acid of weak base Acidic Depends on relative strength Small, highly charged metal ion Acidic Depends on relative strengths Counter ion of strong base Neutral basic pH (relative to pK a ) [In - ]/[HIn] ratio Color of Indicator Solution pH = pK a Ratio = 10 0 = 1 Intermediate color pH = pK a + 1 Ratio > 101 = 10 Color of In - pH = pK a – 1 Ratio < 10 -1 = .10 Color of HIn * a The pH is only relative to the pK a if the ratio is equal to the given number Table 17.1 The Effect of ΔH, ΔS, and T on Spontaneity pg. 791 ΔH ΔS Low Temperature High Temperature Example - + Spontaneous (ΔG < 0) Spontaneous (ΔG < 0 2N 2 O(g) 2N 2 (g)+O 2 (g) + - Non-Spontaneous (ΔG > 0)
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scotty 4 - Chemistry Notes Weak Acids Hydrofluoric acid...

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