prettygirl2204
05.08.2021 •
Chemistry
Schwartz công bố kết quả chuẩn độ 50,00 mL dung dịch axit yếu bằng dung dịch NaOH 1,004.10-3M trên bảng sau :
VNaOH pH VNaOH pH VNaOH pH VNaOH pH
0.03 6.212 2.60 8.146 4.99 8.926 7.36 9.484
0.09 6.504 2.79 8.208 5.21 8.994 7.56 9.514
0.29 6.936 3.01 8.273 5.41 9.056 7.79 9.545
0.72 7.367 3.41 8.332 5.61 9.118 8.21 9.572
1.06 7.567 3.60 8.458 5.85 9.180 8.44 9.599
1.32 7.685 3.80 8.521 6.05 9.231 8.64 9.645
1.53 7.776 3.99 8.584 6.28 9.283 8.84 9.666
1.76 7.863 4.18 8.650 6.47 9.327 9.07 9.688
1.97 7.938 4.40 8.720 6.71 9.374 9.27 9.706
2.18 8.009 4.57 8.784 6.92 9.414
2.38 8.077 4.79 8.858 7.15 9.451
a. Hãy xác định điểm tương đương, nồng độ của dung dịch axit yếu ban đầu
b. Xác định hằng số phân ly axit của axit yếu trên.
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Ответ:
s: It is durable, low cost, water resistant, lesser energy and heavy chemicals requirements in manufacture and are light weight
Explanation: