BIOL 118 Lecture Notes - Lecture 2: Chemical Equilibrium, Electronegativity, Ion
20 Jan 2017
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Oxygen has a high electronegativity the o has a partial negative charge the h are positive charges: hydrogen bonds between h2o and other polar molecules or ions. Hydrophilic: water loving interact with water: but highly non polar molecules do not dissolve in water long carbon chain lipids, waxes, or oils. Do not dissolve in water acid base reactions and ph: acid base reactions. Acids: give up protons in chemical reactions. Bases: accept protons in chemical reactions: ph: measurement of the proton concentration in a solution. Hydrogen ion concentration: ph of pure water is 7, ph scale is from 0 to 14. Ph 7 is neutral above 7 is basic. Below 7 is acidic chemical reactions: chemical equilibrium: the forward and reverse reactions proceed at the same rate. But some reactions may proceed more to one direction: endothermic reactions must absorb heat to proceed, exothermic reactions release heat.
