11-03-09 - Lowest exam score will be replaced with of your...

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Unformatted text preview: Lowest exam score will be replaced with of your final exam score. Announcement : The grade cut-offs reported in the course packet will almost certainly be lowered to be more lenient, but the new cut-offs will not be set until after the Final Exam when all grades are in. What we already studied What we already studied Kinetics: how fast will it get there? Equilibrium: what does it look like when it gets there? Spontaneity: will it get there by itself (if we leave it for enough time)? SPONTANEITY HAS NOTHING TO DO WITH SPEED . instantaneous or fast do NOT equal spontaneous. Spontaneous Not spontaneous Remorse, regret, hope, Memory, freedom of will There is a distinction in nature between past and future Spontaneous Not spontaneous H 2 ( g ) + O 2 ( g ) H 2 O ( g ) Spontaneous (under standard conditions) ? H 2 ( g ) + Cl 2 ( g ) 2 HCl ( g ) N 2 ( g ) + O 2 ( g ) 2 NO 2 ( g ) CH 3 CH 2 OH ( aq ) CH 3 CHO ( g ) + H 2 ( g ) Ba(OH) 2 ( s ) + 2 NH 4 SCN ( s ) Ba(SCN) 2 ( aq ) +2 NH 3 ( aq ) + 2 H 2 O ( l ) Hypothesis : Spontaneous reactions are exothermic H 2 ( g ) + O 2 ( g ) H 2 O ( g ) reactants products E a H < Ba(OH) 2 ( s ) + 2 NH...
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This note was uploaded on 12/18/2009 for the course BIOL 101 taught by Professor Wormer during the Fall '08 term at Purdue University-West Lafayette.

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11-03-09 - Lowest exam score will be replaced with of your...

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