lecture02 - General Chemistry II - X19B Week 2 Lecture...

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General Chemistry II - X19B Week 2 Lecture Chemical Kinetics: The Rate of Chemical Reactions
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Fe 2 0 3 + Al Al 2 O 3 + Fe + Δ E
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Fe 2 0 3 + 2 Al Al 2 O 3 + 2 Fe + Δ E Always check stoichiometry!
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Fe 2 0 3 + 2Al Al 2 O 3 + 2Fe + Δ E Have 44g… How much?
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Fe 2 0 3 + 2Al Al 2 O 3 + 2Fe + Δ E Have 44g… How much? How much? How much?
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Fe 2 0 3 + 2Al Al 2 O 3 + 2Fe + Δ E Have 44g… How much? How much? How much? How much?
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Fe 2 0 3 + 2Al Al 2 O 3 + 2Fe + Δ E Have 44g… How much? How much? How much? How much? Add Temperature?
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Fe 2 0 3 + 2Al Al 2 O 3 + 2Fe + Δ E Have 44g… How much? How much? How much? How much? Add Temperature? How fast?
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Fe 2 0 3 + 2Al Al 2 O 3 + 2Fe + Δ E Have 44g… How much? How much? How much? How much? Add Temperature? How fast? How do you determine… Temperature affect rate? Concentration affect rate?
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Fe 2 0 3 + 2Al Al 2 O 3 + 2Fe + Δ E Have 44g… How much? How much? How much? How much? Add Temperature? How fast? How do you determine… Temperature affect rate? Concentration affect rate? Reaction Mechanism?
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Fe 2 0 3 + 2Al Al 2 O 3 + 2Fe + Δ E time ion Concentrat Δ Δ = Rate Reaction time ce dis Δ Δ = tan Rate Car Rate always positive Instantaneous is tangent line, then slope Describe difference between the two
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Example problem (b) A is consumed at half the rate B is formed. = –(0.0246 mol/L·s)(1/2) = –0.0123 mol/L·s (c) Instantaneous rate is determined by drawing a tangent line to the plot at [B] = 0.750 mol/L. The slope of this line is approximately 0.016 mol/L·s
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What affects the rate of an equation? Concentration Temperature Catalyst Surface Area Lycopodium powder Mentos and diet coke diet coke add sugary compound
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Effects on the rate of reaction A B + C Conc. Rate 1.0 M 0.1 M/min 0.5 M 0.05 M/min 0.25 M 0.025 M/min Rate [A] Rate = k[A] aA + bB
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This note was uploaded on 02/09/2012 for the course CHEMISTRY 101 taught by Professor Endy during the Spring '11 term at Harvard.

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lecture02 - General Chemistry II - X19B Week 2 Lecture...

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