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chem 07會考題問題
我唔明點解07年 42題會係 D.. 3果個明明係一樣既functional group 但點解會有condensation polymerization? 仲有25題.點解3係對.我睇過解題.佢話so3^2-會變成so2..唔係變so4^2-咩..唔識呀..有冇人教下我><: chem07 http://www.u-file.net/f-tak9343
最佳解答:
When an acid is added to a compond of suphite(either solid or solution), SO2 is produced: SO3 2- + 2H+ ------>SO2 + H2O for 42 note that both have double functional group (key feature for condensation to occur) 1) -COOH carboxylic acid group 2) -NH2 amine group they are amino acids, the polymer is just polypeptide the proton from amine group combines with the -OH with the carboxylic acid group i guess it is better to have explaination with diagram see wikipedia http://en.wikipedia.org/wiki/Amino_acid#Peptide_bond_formation Peptide bond formation the diagram on the right hand side
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chem 07會考題問題
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發問:我唔明點解07年 42題會係 D.. 3果個明明係一樣既functional group 但點解會有condensation polymerization? 仲有25題.點解3係對.我睇過解題.佢話so3^2-會變成so2..唔係變so4^2-咩..唔識呀..有冇人教下我><: chem07 http://www.u-file.net/f-tak9343
最佳解答:
When an acid is added to a compond of suphite(either solid or solution), SO2 is produced: SO3 2- + 2H+ ------>SO2 + H2O for 42 note that both have double functional group (key feature for condensation to occur) 1) -COOH carboxylic acid group 2) -NH2 amine group they are amino acids, the polymer is just polypeptide the proton from amine group combines with the -OH with the carboxylic acid group i guess it is better to have explaination with diagram see wikipedia http://en.wikipedia.org/wiki/Amino_acid#Peptide_bond_formation Peptide bond formation the diagram on the right hand side
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