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Ch. 17 - Acids & Bases I. Intro to Acids & Bases (p.466-473) Definitions Properties Uses
A. Definitions Acids Ionize to form hydronium ions (H 3 O + ) in water HCl + H 2 O H 3 O + + Cl –
A. Definitions Bases Dissociate or ionize to form hydroxide ions (OH - ) in water NH 3 + H 2 O NH 4 + + OH -
A. Definitions Indicator substance that changes color in an acid or base Examples: litmus - red/blue phenolphthalein - colorless/pink goldenrod - yellow/red red cabbage juice - pink/green
B. Properties sour taste corrosive electrolytes turn litmus red react with metals to form H 2 gas bitter taste corrosive electrolytes turn litmus blue slippery feel
C. Uses H 3 PO 4 - soft drinks, fertilizer, detergents H 2 SO 4 - fertilizer, car batteries HCl - gastric juice HC 2 H 3 O 2 - vinegar
C. Uses NaOH - lye, drain and oven cleaner Mg(OH) 2 - laxative, antacid NH 3 - cleaners, fertilizer
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