Question

。

(請忽略右下角107題的算式)
請問我是哪裡算錯了呢?
(標準答案0.89 我的~0.70）

Ans: D
Category: Difficult
Section: 16.5
hoo
.
106. What is the pH of a solution prepared by mixing 50.0 mL of 0.300 M HCl with 450.0 mL)
of 0.400 M HIO3? [K (HIO3) = 1.6 x 10-1
k= [CcHsCod ][CH3 C00H]
A) 1.52 B) 0.80 C) 0.72 D) 0.89 E) 0.66
= 2.b
[CH3C00-][ C6H-C001]
Ans: D
Category: Difficult Section: 16.5
CH₃COOH + H₂C00
(o

X= 7.5.17=0.3578%=0.05 (tul am)
,
x=
1.6.17=_X
x>
0.4-X, X 10.16X-0.064-0
-0.167 0.2816 -0.167 0.33
2.
2
x=0:185 or (7)
(0.3.20.05) +60.185x0.45)=0.098>mol
0.0982=0.5(1)=0.1965 (M)=1965.15
pM--2,09-18) = 0.90
# lifel

Answer 1

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我就是我

ka式子中的H+需將HCl的H+也考慮進去