Ab_table - 1.0 x 10-14 VWA H 2 O K OH-SB 1. x 10-17 HS-K...

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THE RELATIVE STRENGTHS OF ACIDS AND BASES Ka ACID BASE . Large SA HClO 4 + H 2 O K H 3 O + + ClO 4 - VWB " HI K I - " HCl K Cl - " H 2 SO 4 K HSO 4 - " HNO 3 K NO 3 - 1 H 3 O + K H 2 O ---------------------------------------------------------------------------------------------------------------- 0.014 WA H 2 SO 3 K HSO 3 - WB 0.010 HSO 4 - K SO 4 -2 7.2 x 10 -3 H 3 PO 4 K H 2 PO 4 - 7.1 x 10 -4 HNO 2 K NO 2 - 6.8 x 10 -4 HF K F - 1.8 x 10 -5 HAc K Ac - 4.5 x 10 -7 H 2 CO 3 K HCO 3 - 1. x 10 -7 H 2 S K HS - 6.5 x 10 -8 HSO 3 - K SO 3 -2 6.3 x 10 -8 H 2 PO 4 - K HPO 4 - 2 6.2 x 10 -10 HCN K CN - 5.7 x 10 -10 NH 4 + K NH 3 4.7 x 10 -11 HCO 3 - K CO 3 - 2 4.2 x 10 -13 HPO 4 - 2 K PO 4 - 3 ---------------------------------------------------------------------------------------------------------------
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Unformatted text preview: 1.0 x 10-14 VWA H 2 O K OH-SB 1. x 10-17 HS-K S-2 V. Small OH-K O-2 " NH 3 K NH 2-Any solution: pH = -log[H 3 O + ] Ka x Kb = Kw Kw = [H 3 O + ][OH-] = 1.0 x 10-14 or pH + pOH = 14.00 (at 25KC) Buffers: pH = pKa - log( ] CB [ ] CA [ ) = pKa + log( [CA] CB] [ ) ≈ pKa ± 1. (for 10. K [CA]/[CB] K 0.1) Weak acids: [H 3 O + ] ≈ o C Ka ⋅ (for C o » Ka » Kw)...
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This note was uploaded on 09/19/2011 for the course CHM 2051 taught by Professor Staff during the Spring '08 term at University of Florida.

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