15.pH weak bases

# 15.pH weak bases - pH = 7.00 final volume = 15.0 mL 40.0 mL...

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Acids Lesson 8 pH for Weak Bases

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1. Calculate the pH of 0.50 M NH 3 . Weak Base Need Kb( NH 3 ) = Kw Ka( NH 4 + ) = 1 x 10 -14 Small Kb 0
Kb = [ NH ][ OH ]

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Small Kb 0
Kb = [ HCO 3 - [ OH ]

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3. Calculate the pH of 0.20 M NaCl. NaCl is a neutral salt

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Unformatted text preview: pH = 7.00 final volume = 15.0 mL + 40.0 mL = 55.0 mL [KOH] = 0.0020 moles = 0.03636 M 0.0550 L pOH = 1.44 pH = 12.56 Happy Holidays...
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