環境化學 酸鹼平衡 - 考試
By Adele
at 2013-01-09T11:55
at 2013-01-09T11:55
Table of Contents
某工業廢水200mL以NaOH滴定液滴定,用掉5.4mLNaOH滴定使酚太試劑變色.在標定NaOH滴
定液時,滴定鄰苯二甲酸標準液20.0mL(配置方法為溶解3.8435g無水鄰苯二甲酸氫鉀
KHC8H4O4 一級標準品到1000mL)用掉8.6mL以NaOH滴定液.請問工業廢水的酸度以每公升
碳酸鈣表示應為多少?
書上解答如下
KHC8H4O4分子量=204
N1 x 8.6 =3.8435/204 x 20, N1=0.0438
0.0438 x 5.4/200 x50 x 1000=59.15mg/L
我的問題是
N1=0.0438 N可是她怎麼知道她的當量的?
當量濃度=物質重量(g/L)/當量
不知道當量要怎麼做出換算
有請板上強者指導了
非常感謝
--
他強任他強
清風拂山崗
他橫由他橫
明月照大江
--
定液時,滴定鄰苯二甲酸標準液20.0mL(配置方法為溶解3.8435g無水鄰苯二甲酸氫鉀
KHC8H4O4 一級標準品到1000mL)用掉8.6mL以NaOH滴定液.請問工業廢水的酸度以每公升
碳酸鈣表示應為多少?
書上解答如下
KHC8H4O4分子量=204
N1 x 8.6 =3.8435/204 x 20, N1=0.0438
0.0438 x 5.4/200 x50 x 1000=59.15mg/L
我的問題是
N1=0.0438 N可是她怎麼知道她的當量的?
當量濃度=物質重量(g/L)/當量
不知道當量要怎麼做出換算
有請板上強者指導了
非常感謝
--
他強任他強
清風拂山崗
他橫由他橫
明月照大江
--
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考試
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