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Chemistry
Chemistry
Problem
Calculate the pH of 0.05 M
KHC
8
H
4
O
4
\text{KHC}_8\text{H}_4\text{O}_4
KHC
8
H
4
O
4
H
2
C
8
H
4
O
4
+
H
2
O
⇌
H
3
O
+
+
HC
8
H
4
O
4
−
;
p
K
a
1
=
2.94
\text{H}_2\text{C}_8\text{H}_4\text{O}_4 + \text{H}_2\text{O} \rightleftharpoons \text{H}_3\text{O}^+ + \text{HC}_8\text{H}_4\text{O}_4^-; \quad pK_{a1} = 2.94
H
2
C
8
H
4
O
4
+
H
2
O
⇌
H
3
O
+
+
HC
8
H
4
O
4
−
;
p
K
a
1
=
2.94
HC
8
H
4
O
4
−
+
H
2
O
⇌
H
3
O
+
+
C
8
H
4
O
4
2
−
;
p
K
a
2
=
5.44
\text{HC}_8\text{H}_4\text{O}_4^- + \text{H}_2\text{O} \rightleftharpoons \text{H}_3\text{O}^+ + \text{C}_8\text{H}_4\text{O}_4^{2-}; \quad pK_{a2} = 5.44
HC
8
H
4
O
4
−
+
H
2
O
⇌
H
3
O
+
+
C
8
H
4
O
4
2
−
;
p
K
a
2
=
5.44
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