Lecture 10.Feb10 - BIO 311C Spring 2010 Lecture 10...

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BIO 311C Spring 2010 Lecture 10 – Wednesday 10 Feb. 2010
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The name of an ionizable functional group is slightly different, depending on its ionization state. The ionized and non-ionized forms of functional groups have very different chemical properties. R O O C H R O O - C carboxylic acid carboxylate R H N H R H H N H + amine ammonium ion phosphoric acid phosphate (monobasic) phosphate (dibasic) *
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water is 7.0, some substances change the pH when they are dissolved in water. Def. When one or more substances is dissolved in water, the result is an aqueous solution. A teaspoon of sugar dissolved in a glass of water produces an aqueous soln. The cytoplasmic matrix of cells is an aqueous soln. Example: When a molecule with carboxylic acid functional group is dissolved in water, the resulting aqueous solution has an increased concentration of H 3 O + . This can be expressed as a decrease in the pH of the solution.
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Lecture 10.Feb10 - BIO 311C Spring 2010 Lecture 10...

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