作者ckypt92 (I love Wei)
看板Chemistry
標題[問題]pka解不出來
時間Sat Sep 20 10:53:01 2008
有一生化題目 我算好久都解不出來 不知道版上有沒有高手可以幫我算看看
題目是：An unknown compound,X,is thought to have a carboxyl group
with a pKa of 2.0 and another ionizable group with a pKa between 5 and 8.
When 75mL of 0.1M NaOH is added to 100mL 0f a 0.1M solution of X at pH 2.0,
the pH increases to 6.72 . Calculate the pKa of the second ionizable
group of X.
答案是7
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※ 編輯: ckypt92 來自: 123.240.200.34 (09/20 11:41)