1
瀹為獙涓�
閱嬮吀瑙ｇ搴﹀拰瑙ｇ甯告暟鐨勬祴瀹?/p>
Determination of Dissociation Degree and Dissociation Constant of
Acetic Acid
涓�銆佸疄楠岀洰鐨?/p>
1
锛庝簡瑙?/p>
pH
娉曟祴瀹氶唻閰歌В绂诲害鍜岃В绂诲父鏁扮殑鍘熺悊銆?/p>
2
锛庡涔?/p>
pH
璁′娇鐢ㄦ柟娉曪紝杩涗竴姝ョ粌涔犳淮瀹氱銆佺Щ娑茬绛夊熀鏈搷浣溿�?/p>
浜屻�侀涔犲唴瀹?/p>
1
锛庡惛绠°�佺Щ娑茬鍜屽閲忕摱鐨勬纭娇鐢ㄣ�?/p>
2
锛庨吀纰辨淮瀹氱鐨勬纭娇鐢ㄣ�?/p>
3
锛庡浣曟帶鍒剁粓鐐瑰墠鐨勫崐婊存搷浣溿�?/p>
4
锛庨吀搴﹁鐨勬纭娇鐢ㄣ�?/p>
涓夈�佸疄楠屽師鐞?/p>
閱嬮吀鏄竴鍏冨急閰革紝鍦ㄦ按婧舵恫涓瓨鍦ㄧ潃涓嬪垪骞宠 锛?/p>
HAc(aq) = H
+
(aq) + Ac
-
(aq)
寮�濮嬫祿搴?/p>
/mol路
dm
-3
c
0
0
骞宠 娴撳害
/mol路
dm
-3
c
-
c
伪
c
伪
c
伪
鍏惰В绂诲父鏁拌〃杈惧紡锛?/p>
a
K
飦?/p>
=
+
-
胃
胃
胃
(H
)
(Ac
)
(HAc)
c
c
c
c
c
c
飪?/p>
=
2
c
c
c
飦?/p>
飦?/p>
飥?/p>
2
=
2
1
c
飦?/p>
飦?/p>
飥?/p>
鈮?/p>
c
伪
2
伪
涓洪唻閰哥殑瑙ｇ搴︺�?/p>
鍦ㄤ竴瀹氭俯搴︽椂锛岀敤
pH
璁℃祴瀹氫竴绯诲垪宸茬煡娴撳害鐨勯唻閰哥殑
pH
鍊硷紝鍐嶆寜
pH= -lg
+
(H
)
c
锛屾眰
鍑?/p>
+
(H
)
c
銆傛牴鎹?/p>
+
(H
)
c
=
c
伪
锛屽嵆鍙眰寰椾竴绯诲垪鐨?/p>
HAc
鐨?/p>
伪
鍜?/p>
a
K
飦?
鍊硷紝鍙栧叾骞冲潎鍊煎嵆涓哄湪璇?
娓╁害涓?/p>
HAc
鐨勮В绂诲父鏁般�?/p>
鍥涖�佸疄楠屼华鍣ㄥ拰鑽搧
1
锛庝华鍣?/p>
pHS-25
鍨嬮吀搴﹁銆?/p>
姘旀祦鐑樺共鍣ㄣ�?/p>
50cm
3
閰稿紡婊村畾绠′袱鏀�?/p>
50cm
3
纰卞紡婊村畾绠′竴鏀�?/p>
100cm
3
鐑ф澂鍥涘彧銆?/p>
250cm
3
閿ュ舰鐡朵袱鍙�?/p>
25cm
3
绉绘恫绠′竴鏀�?/p>
鐜荤拑妫掋�?/p>
0
鈩冿綖
100
鈩冩俯搴﹁涓�鏀?/p>
锛堝叕鐢級
銆?