娌夋穩婧惰В骞宠 鐨勮绠楋細
1:
宸茬煡涓�瀹氭俯搴︿笅锛?/p>
Mg(OH)
2
鍦ㄦ按涓殑婧惰В搴︿负
5.8 脳10
-3
g/L
銆?/p>
(1)
姹?/p>
Mg(OH)
2
楗卞拰婧舵恫涓殑婧跺害绉?/p>
K
sp
(2)
姹?/p>
Mg(OH)
2
楗卞拰婧舵恫涓殑
pH
鍜?/p>
[OH
-
]
(3)
姹?/p>
Mg(OH)
2
鍦?/p>
0.001mol/L
鐨?/p>
NaOH
婧舵恫涓殑婧惰В搴︺�?/p>
(4)
姹?/p>
Mg(OH)
2
鍦?/p>
0.001mol/L
鐨?/p>
MgCl
2
婧舵恫涓殑婧惰В搴︺�?/p>
2
锛?/p>
(1)
宸茬煡
25 鈩冩椂锛?/p>
K
sp
[Mg(OH)
2
]
锛?.6脳10
锛?/p>
12
锛涢吀纰辨寚绀哄墏鐧鹃噷閰氳摑鍙樿壊鐨?/p>
pH
鑼冨洿濡備笅锛?/p>
pH
锛?/p>
8.0
8.0
锝?/p>
9.6
锛?/p>
9.6
棰滆壊
榛勮壊
缁胯壊
钃濊壊
25 鈩冩椂锛屽湪
Mg(OH)
2
楗卞拰婧舵恫涓淮鍔?/p>
2
婊寸櫨閲岄厷钃濇寚绀哄墏锛屾憾娑茬殑棰滆壊涓?/p>
____________
銆?/p>
(2)
鍚?/p>
50
mL
0.018
mol路L
锛?/p>
1
鐨?/p>
AgNO
3
婧舵恫涓姞鍏?/p>
50
mL
0.020
mol路L
锛?/p>
1
鐨勭洂閰革紝鐢熸垚娌夋穩銆傚凡鐭ヨ娓╁害涓?/p>
AgCl
鐨?/p>
K
sp
锛?.0脳10
锛?/p>
10
锛屽拷鐣ユ憾娑茬殑浣撶Н鍙樺寲锛岃璁＄畻锛?/p>
鈶犲畬鍏ㄦ矇娣�鍚庯紝婧舵恫涓?/p>
c
(Ag
锛?
)
锛?/p>
__________
銆傗憽瀹屽叏娌夋穩鍚庯紝婧舵恫鐨?/p>
pH
锛?/p>
__________
銆?/p>
鈶?/p>
濡?/p>
鏋?/p>
鍚?/p>
瀹?/p>
鍏?/p>
娌?/p>
娣�
鍚?/p>
鐨?/p>
婧?/p>
娑?/p>
涓?/p>
缁?/p>
缁?/p>
鍔?/p>
鍏?/p>
50
mL
0.001
mol路
L
锛?/p>
1
鐨?/p>
鐩?/p>
閰?/p>
锛?/p>
鏄?/p>
鍚?/p>
鏈?/p>
鐧?/p>
鑹?/p>
娌?/p>
娣�
鐢?/p>
鎴愶紵
________________(
濉�滄槸鈥濇垨鈥滃惁鈥?銆?/p>
(3)
鍦ㄦ煇娓╁害涓嬶紝
K
sp
(FeS)
锛?.25脳10
锛?/p>
18
锛?/p>
FeS
楗卞拰婧舵恫涓?/p>
c
(H
锛?/p>
)
涓?/p>
c
(S
2
锛?/p>
)
涔嬮棿瀛樺湪鍏崇郴锛?/p>
c
2
(H
锛?/p>
)路
c
(S
2
锛?
)
锛?
1.0脳10
锛?/p>
22
锛屼负浜嗕娇婧舵恫閲?/p>
c
(Fe
2
锛?
)
杈惧埌
1 mol路L
锛?/p>
1
锛岀幇灏嗛�傞噺
FeS
鎶曞叆鍏堕ケ鍜屾憾娑蹭腑锛屽簲璋冭妭婧舵恫涓殑
c
(H
锛?/p>
)
绾︿负
__________________
銆?/p>
娌夋穩婧惰В骞宠 鐨勫簲鐢細
渚?/p>
1
锛氬凡鐭ワ細
Cu(OH)
2
锛?/p>
Ksp
涓?/p>
2.2
脳
10
-20
锛?/p>
Fe(OH)
3
锛?/p>
Ksp
涓?/p>
1.6
脳
10
-39
鐜版湁娴撳害鍧囦负
0.1mol/L
鐨?/p>
Cu
2+
銆?/p>
Fe
3+
鐨勬贩鍚堟憾娑诧紝
1.6
脳
10
-39
鍒欙細
鈶?/p>
Fe
3+
寮�濮嬫矇娣�鏃剁殑
c(OH
-
)=_____
锛?/p>
瀹屽叏娌夋穩鏃剁殑
c(OH
-
)=_____
锛?/p>
锛堢瀛愭祿搴﹀皬浜?/p>
10
-5
鏃跺彲鐪嬫垚瀹屽叏娌夋穩锛?/p>
Cu
2+
寮�濮嬫矇娣�鏃剁殑
c(OH
-
)=_____
銆?/p>
鈶佃嫢瑕侀櫎鍘?/p>
Fe
3+
锛屽簲灏?/p>
pH
璋冭妭鑷?/p>
____________
渚?/p>
2
閿呯倝姘村灑鏃細闄嶄綆鐕冩枡鐨勫埄鐢ㄧ巼锛?/p>
閫犳垚鑳芥簮娴垂锛?/p>
涔熶細褰卞搷閿呯倝鐨勪娇鐢ㄥ鍛斤紝
杩樺彲鑳藉舰鎴愬畨鍏ㄩ殣鎮ｏ紝
鍥犳
瑕佸畾鏈熼櫎鍘婚攨鐐夋按鍨€�傛按鍨腑鍚湁
CaSO
4
锛岀敤閰稿緢闅鹃櫎鍘汇�傛�濊�冿細濡備綍鍘婚櫎
CaSO
4
锛熷啓鍑虹浉搴旀柟绋嬪紡銆?/p>
渚?/p>
3
锛?/p>
BaSO
4
鐨?/p>
Ksp
姣?/p>
BaCO
3
灏忥紝浣犺涓鸿兘瀹炵幇杩欎竴杞寲鍚楋紵宸茬煡甯告俯涓嬶紝
BaCO
3
鐨?/p>
K
SP
= 5.1
脳
10
-9
mol
2
鈥?/p>
L
-2
锛?
BaSO
4
鐨?/p>
K
SP
=1.0
脳
10
-10
mol
2
鈥?/p>
L
-2
銆傜幇灏?/p>
0.233g BaSO
4
鍥轰綋鏀惧叆
100mL
姘翠腑锛堝拷鐣ユ憾娑蹭綋绉彉鍖栵級
锛屽垯锛?/p>
鈶犳憾娑蹭腑
c(Ba
2+
)=
锛?/p>
鈶¤嫢鍦ㄤ笂杩颁綋绯讳腑锛屽疄鐜?/p>
BaSO
4
鍚?/p>
BaCO
3
杞寲锛?/p>
CO
3
2-
娴撳害鐨勫彇鍊艰寖鍥存槸
銆?/p>
鈶㈠浣曟搷浣滄墠鑳戒繚璇佺粷澶у鏁?/p>
BaSO
4
杞寲涓?/p>
BaCO
3
锛?/p>