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u11lectout - Unit 11: Equilibrium / Acids and Bases...

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Unit 11: Equilibrium / Acids and Bases Name: _______________________ reversible reaction : R P and P R Acid dissociation is a reversible reaction. H 2 SO 4 2 H 1+ + SO 4 1– equilibrium: -- looks like nothing is happening, however… -- Le Chatelier’s principle : When a system at equilibrium is disturbed, it shifts to a new equilibrium that counteracts the disturbance N 2 (g) + 3 H 2 (g) 2 NH 3 (g) Disturbance Equilibrium Shift Add more N 2 …………………. . H 2 …………………. . NH 3 ………………… Remove NH 3 …………………. . Add a catalyst………………… Increase pressure……………. Light-Darkening Eyeglasses AgCl + energy Ag o + Cl o (clear) (dark) Go outside… Then go inside… 1
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2 In a chicken… CaO + CO 2 CaCO 3 (eggshells) In summer, [ CO 2 ] in a chicken’s blood due to panting. -- How could we increase eggshell thickness in summer? -- -- Acids and Bases pH pH taste ______ taste ______ react with ______ react with ______ proton (H 1+ ) donor proton (H 1+ ) acceptor turn litmus ______ turn litmus ______ lots of H 1+ /H 3 O 1+ lots of OH 1– react w /metals don’t react w /metals Both are electrolytes . pH scale : measures acidity/basicity Each step on pH scale represents a factor of ___. pH 5 vs. pH 6 (___X more acidic) pH 3 vs. pH 5 (______X different) pH 8 vs. pH 13 (______X different) 2
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Common Acids Strong Acids hydrochloric acid: HCl  H 1+ + Cl 1– -- sulfuric acid: H 2 SO 4  2 H 1+ + SO 4 2– -- nitric acid: HNO 3  H 1+ + NO 3 1– -- Weak Acids acetic acid: CH 3 COOH  CH
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This note was uploaded on 11/09/2011 for the course CHEM 110 taught by Professor Sullivan during the Fall '10 term at BYU.

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u11lectout - Unit 11: Equilibrium / Acids and Bases...

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