涓撻
03
鍙傛暟姹傝В涓撶粌
1
锛庣⒈寮忕～閰搁摑婧舵恫鍙敤浜庣儫姘旇劚纭�傚娓╀笅鍚戜竴瀹氭祿搴︾殑纭吀閾濇憾娑蹭腑鍔犲叆涓�瀹氶噺鐨勭⒊閰搁挋绮夋湯锛屽弽搴斿悗
缁忚繃婊ゅ緱鍒扮⒈寮忕～閰搁摑婧舵恫锛屽弽搴旀柟绋嬪紡涓猴紙
2鈭?/p>
x
锛?/p>
Al
2
(SO
4
)
3
+3
x
CaCO
3
+3
x
H
2
O=2[
锛?/p>
1鈭?/p>
x
锛?
Al
2
(SO
4
)
3
路
x
Al(OH)
3
]+3
x
CaSO
4
鈫?3
x
CO
2
鈫?/p>
锛岀敓鎴愮墿锛?/p>
1鈭?/p>
x
锛?/p>
Al
2
(SO
4
)
3
路
x
Al(OH)
3
涓?/p>
x
鍊肩殑澶у皬褰卞搷纰卞紡纭吀閾濇憾
娑茬殑鑴辩～鏁堢巼銆?/p>
锛?/p>
1
锛夐�氳繃娴嬪畾纰卞紡纭吀閾濇憾娑蹭腑鐩稿叧绂诲瓙鐨勬祿搴︾‘瀹?/p>
x
鐨勫�硷紝娴嬪畾鏂规硶濡備笅锛?/p>
鈶犲彇纰卞紡纭吀閾濇憾娑?/p>
25.00 mL
锛屽姞鍏ョ洂閰搁吀鍖栫殑杩囬噺
BaCl
2
婧舵恫鍏呭垎鍙嶅簲锛岄潤缃悗杩囨护銆佹礂娑わ紝骞茬嚗鑷虫亽
閲嶏紝寰楀浐浣?/p>
2.3300g
銆?/p>
鈶″彇纰卞紡纭吀閾濇憾娑?/p>
2.50 mL
锛岀█閲婅嚦
25 mL
锛屽姞鍏?/p>
0.1000 mol路
L
鈭?/p>
1
EDTA
鏍囧噯婧舵恫
25.00 mL
锛岃皟鑺傛憾娑?/p>
pH
绾︿负
4.2
锛岀叜娌革紝鍐峰嵈鍚庣敤
0.08000 mol路
L
鈭?/p>
1
CuSO
4
鏍囧噯婧舵恫婊村畾杩囬噺鐨?/p>
EDTA
鑷崇粓鐐癸紝娑堣�?/p>
CuSO
4
鏍囧噯婧舵恫
20.00 mL
锛堝凡鐭?/p>
Al
3+
銆?/p>
Cu
2+
涓?/p>
EDTA
鍙嶅簲鐨勫寲瀛﹁閲忔瘮鍧囦负
1
鈭?/p>
1
锛?/p>
銆?/p>
璁＄畻锛?/p>
1鈭?/p>
x
锛?/p>
Al
2
(SO
4
)
3
路
x
Al(OH)
3
涓殑
x
鍊?/p>
____
锛堝啓鍑鸿绠楄繃绋嬶級
銆?/p>
銆愮瓟妗堛�?/p>
25mL
婧舵恫涓細
n
(SO
4
2鈭?/p>
)=
n
(BaSO
4
) =
=0.0100 mol
锛?/p>
2.5 mL
婧舵恫涓細
n
(Al
3+
) =
n
(EDTA)鈭?/p>
n
(Cu
2+
)=0.1000 mol路
L
鈭?/p>
1
脳
25.00 mL脳
10
鈭?/p>
3
L路
mL
鈭?/p>
1
鈭?/p>
0.08000 mol路
L
鈭?/p>
1
脳
20.00 mL脳
10
鈭?/p>
3
L路
mL
鈭?/p>
1
=9.000脳
10
鈭?/p>
4
mol
锛?/p>
25 mL
婧舵恫涓細
n
(Al
3+
)=9.000脳
10
鈭?/p>
3
mol
銆?/p>
1 mol (1鈭?/p>
x
)Al
2
(SO
4
)
3
路
x
Al(OH)
3
涓?/p>
n
(Al
3+
)=(2鈭?/p>
x
)mol
锛?/p>
n
(SO
4
2鈭?/p>
)=3(1
鈭?/p>
x
)mol
锛?/p>
x
=0.41
銆愯В鏋愩�?/p>
锛?/p>
1
锛?/p>
25mL
婧舵恫涓細
n
锛?/p>
SO
4
2-
锛?/p>
= n
锛?/p>
BaSO
4
锛?/p>
=
=0.0100 mol
2.5 mL
婧舵恫涓細
n
锛?/p>
Al
3+
锛?/p>
= n
锛?/p>
EDTA
锛?/p>
鈭?/p>
n
锛?/p>
Cu
2+
锛?/p>
=0.1000 mol路
L
鈭?/p>
1
脳
25.00 mL脳
10
鈭?/p>
3
L路
mL
鈭?/p>
1
鈭?/p>
0.08000 mol路
L
鈭?/p>
1
脳
20.00
mL脳
10
鈭?/p>
3
L路
mL
鈭?/p>
1
=9.000脳
10
鈭?/p>
4
mol
25 mL
婧舵恫涓細
n
锛?/p>
Al
3+
锛?/p>
=9.000脳
10
鈭?/p>
3
mol
1 mol
锛?/p>
1-x
锛?/p>
Al
2
锛?/p>
SO
4
锛?/p>
3
路
xAl
锛?/p>
OH
锛?/p>
3
涓?/p>
n
锛?/p>
Al
3+
锛?/p>
=
锛?/p>
2-x
锛?/p>
mol
锛?/p>
n
锛?/p>
SO
4
2-
锛?/p>
=3
锛?/p>
1-x
锛?/p>
mol
=
=
锛岃В寰?/p>
x=0.41
銆?/p>
2
锛?/p>
[2017
鏂拌鏍団參
]
缁跨熅鏄惈鏈変竴瀹氶噺缁撴櫠姘寸殑纭吀浜氶搧锛屽湪宸ュ啘涓氱敓浜т腑鍏锋湁閲嶈鐨勭敤閫斻�傛煇鍖栧鍏磋叮灏?/p>
缁勫缁跨熅鐨勪竴浜涙�ц川杩涜鎺㈢┒銆傚洖绛斾笅鍒楅棶棰橈細
锛?/p>
1
锛変负娴嬪畾缁跨熅涓粨鏅舵按鍚噺锛屽皢鐭宠嫳鐜荤拑绠★紙甯︿袱绔紑鍏?/p>
K
1
鍜?/p>
K
2
锛?/p>
锛堣涓鸿缃?/p>
A
锛夌О閲嶏紝璁颁负
m
1
g
銆傚皢
鏍峰搧瑁呭叆鐭宠嫳鐜荤拑绠′腑锛屽啀娆″皢瑁呯疆
A
绉伴噸锛岃涓?/p>
m
2
g
銆傛寜涓嬪浘杩炴帴濂借缃繘琛屽疄楠屻�?/p>