TÌM HIỂU VỀ CHUẨN ĐỘ ĐA AXIT - ĐA BAZƠ
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Điểm tương đương II: H 3 A + 2XOH X 2 HA + H 2 O<br />
Thành phần dung dịch: HA 2- , H 2 O.<br />
ĐKP:<br />
Với<br />
3<br />
⎡<br />
⎣H + ⎤<br />
⎦ = ⎡<br />
⎣OH − ⎤<br />
⎦ + ⎡<br />
⎣ A − ⎤<br />
⎦ − ⎡<br />
⎣H 2<br />
A − ⎤<br />
⎦ + 2 ⎡<br />
⎣H 3<br />
A ⎤<br />
⎦<br />
II a2 a3<br />
1<br />
pH = (pK +pK )<br />
2
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