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60-Ka-Kb Problems

# 60-Ka-Kb Problems - 5 Calculate Ka and ionization for a...

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ACID – BASE GCHEM II LAB “CONCEPT PROBLEMS” 1. I.D. acid w/circle - conjugate base w/square I.D base w/square - conjugate acid w/circle a) HF(a) + H 2 O(l) H 3 O +1 (a) + F -1 (a) F -1 (a) + H 3 O +1 (a) H 2 O(l) + HF(a) b) NH 3 (a) + H 2 O(l) NH 4 +1 (a) + OH -1 (a) NH 4 +1 (a) + OH -1 (a) H 2 O (l) + NH 3 (a) c) CHO 2 -1 (a) + H 3 O +1 (a) H 2 O (l) + HCHO 2 (a) H 2 O (l) + HCHO 2 (a) H 3 O +1 (a) + CHO 2 -1 (a) d) HSO 4 (a) + CO 2 (g) SO 4 -3 (a) + HCO 3 (a) HCO 3 (a) + SO 4 -3 (a) CO 2 (g) + HSO 4 (a) 2. Complete pH and pOH table: pH [H + ] pOH [OH - ] solution acid or base ? 1.34 3.45 x10 -12 9.54 6.64 x 10 –2 3. What is the pH and pOH of a 0.0452 M Mg (OH) 2 ? 4. What is pH of solution made by mixing 35.5 mls of 0.0250M NaOH and 78.3 mls of 0.0150M KOH ?

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Unformatted text preview: 5. Calculate Ka and % ionization for a 0.00580 M HC 2 H 3 O 2 solution with a pH of 2.52. R eaction I nitial (moles/L) C hange (+/–) E quilibrium 5. Calculate Kb and % ionization for a 0.362 M NH 3 solution with a pH of 12.85. R eaction I nitial (moles/L) C hange (+/–) E quilibrium 6. Calculate pH and % ionization for a 0.0452 M HF solution with Ka of 6.8 x 10 -3 . R eaction I nitial (moles/L) C hange (+/–) E quilibrium 7. Calculate pH and % ionization for a 0.155 M CO 3-2 solution with Kb of 1.85 x 10 -2 . R eaction I nitial (moles/L) C hange (+/–) E quilibrium jpechunf11/2003...
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