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[ppt자료] 04 lecture ppt[1]

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[ppt자료] 04 lecture ppt[1]

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Types of Oxidation-Reduction Reactions Combination Reaction A + B C 2Al + 3Br2 2AlBr3 Decomposition Reaction 2KClO3 2KCl + 3O2 C A + B 0 0 +3 -1 +1 +5 -2 +1 -1 0 Types of Oxidation-Reduction Reactions Combustion Reaction A + O2 B S + O2 SO2 0 0 +4 -2 2Mg + O2 2MgO 0 0 +2 -2 Displacement Reaction A + BC AC + B Sr + 2H2O Sr(OH)2 + H2 TiCl4 + 2Mg Ti + 2MgCl2 Cl2 + 2KBr 2KCl + Br2 Hydrogen Displacem...

Reactions in Aqueous Solution
Chapter 4
Copyright?ⓒ The McGraw-Hill Companies, Inc.? Permission required for reproduction or display.
*
A solution is a homogenous mixture of 2 or more substances
The solute is(are) the substance(s) present in the smaller amount(s)
The solvent is the substance present in the larger amount
Solution
Solvent
Solute
Soft drink (l)
Air (g)
Soft Solder (s)
H2O
N2
Pb
Sugar, CO2
O2, Ar, CH4
Sn
aqueous solutions of KMnO4
*
An electrolyte is a substance that, when dissolved in water, results in a solution that can conduct electricity.
A nonelectrolyte is a substance that, when dissolved, results in a solution that does not conduct electricity.
nonelectrolyte
weak electrolyte
strong electrolyte
*
Strong Electrolyte ? 100% dissociation
NaCl (s) Na+ (aq) + Cl- (aq)
H2O
Weak Electrolyte ? not completely dissociated
CH3COOH CH3COO- (aq) + H+ (aq)
Conduct electricity in solution?
Cations (+) and Anions (-)
*
Ionizat…(투비컨티뉴드 )

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