Ch_4-1_Electrolytes (1)

Ch_4-1_Electrolytes (1) - Na + (aq) + Cl-(aq) WHAT HAPPENS...

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Solutions Sugar molecule C 12 H 22 O 11 Acetic acid molecule CH 3 COOH CH 3 COO - H + Na + Cl - Nonelectrolyte Strong Electrolyte Weak Electrolyte Zumdahl p 91
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E23 Electrolytes—Ionic Solutions 1. The acids HNO 3 , HClO 4 (perchloric acid), HCl , HBr , HI , and H 2 SO 4 are strong electrolytes. Most other acids are weak electrolytes . 2. The hydroxides (OH - ) of the Group 1 metals are strong electrolytes; Group 2 metals starting with Ca are moderate electrolytes . Most other bases including NH 3 are weak electrolytes . 3. Most Salts (E.g. NaCl) are strong electrolytes. 4. The halides and cyanides (CN - ) of “heavy metals” (E.g., Pb and Hg) are often weak electrolytes . 5. Most organic compounds are nonelectrolytes . Notable exceptions are organic acids and bases , which are usually weak electrolytes .
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WATER, THE COMMON SOLVENT Zumdahl p 88
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NaCl(s) + H 2 O
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Unformatted text preview: Na + (aq) + Cl-(aq) WHAT HAPPENS WHEN AN ELECTROLYTE DISSOLVES IN WATER Zumdahl p 89 WHAT HAPPENS WHEN AN ELECTROLYTE DISSOLVES IN WATER Zumdahl p 92 ELECTROLYTE, WEAK ELECTROLYTE OR NONELECTROLYTE? NaCl(s) + H 2 O Na + (aq) + Cl-(aq) Ca(NO 3 ) 2 (s) + H 2 O Ca 2+ (aq) + 2NO 3-(aq) CH 3 COOH(l) + H 2 O H + (aq) + CH 3 COO-(aq) HCl(g) + H 2 O H + (aq) + Cl-(aq) C 2 H 5 OH(l) + H 2 O C 2 H 5 OH(aq) O 2 (g) + H 2 O O 2 (aq) NH 3 (g) + H 2 O NH 3 (aq) + H 2 O NH 4 + (aq) + OH-(aq) PbCl 2 (s) + H 2 O No Dissolution ( Insoluble ) Weak electrolyte Strong electrolyte Strong electrolyte Strong electrolyte Nonelectrolyte Nonelectrolyte Nonelectrolyte Weak electrolyte...
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This note was uploaded on 11/23/2010 for the course CHEM CHEM125 taught by Professor Ellis during the Fall '10 term at NJIT.

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Ch_4-1_Electrolytes (1) - Na + (aq) + Cl-(aq) WHAT HAPPENS...

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