Furthermore in an isolated system chemical reactions

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Unformatted text preview: n of a chemical reaction. It is well to remember that , in a living cell, reactants are almost never at equilibrium concentrations ("equilibrium is death"). Furthermore, in an isolated system, chemical reactions spontaneously proceed toward equilibrium concentrations. However, living cells are not isolated, they acquire energy from their environments, and therefore many biochemical reactions proceed away from equilibrium. The confusion here is compounded by the use of terms "equilibrium concentrations" "standard concentrations" and "actual concentrations" applied to reactants and products in a chemical system. You will need to grapple with these in Biology 100. In addition to this you must keep in mind that the direction a reaction is going has no immediate relation to how fast it is going there. That is, the rate of a reaction is not determined by how far it is from equilibrium. 4 of 5 Bio 20A-M. Dalbey The Chemistry of Life (Chapter 2) 3/29/08 Suggested Problems from Text for Chapter 2 SELF-QUIZ (p. 37) #1, 2, 3, 4, 5, 10 FOR DISCUSSION #1, 2, 3 In #1, it would be more relevant to do CO2 than SiO2. 5 of 5...
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This note was uploaded on 04/17/2008 for the course CHEM 1A taught by Professor Roland during the Fall '07 term at University of California, Santa Cruz.

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