你知道pH为3 的柠檬酸－磷酸二氢钠缓冲溶液点配制啊？

磷酸氢二钠-柠檬酸缓冲液 ? ;$f"Wl
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pH 0.2M Na2HPO4/ml 0.1M柠檬酸/ml pH 0.2M Na2HPO4/ml 0.1M柠檬酸/ml
2.2 0.40 19.6 5.2 10.72 9.28
2.4 1.24 18.76 5.4 11.15 8.85
2.6 2.18 17.82 5.6 11.60 8.40
2.8 3.17 16.83 5.8 12.09 7.91
3.0 4.11 15.89 6.0 12.63 7.37
3.2 4.94 15.06 6.2 13.22 6.78
3.4 5.70 14.30 6.4 13.85 6.15
3.6 6.44 13.56 6.6 14.55 5.45
3.8 7.10 12.90 6.8 15.45 4.55
4.0 7.71 12.29 7.0 16.47 3.53
4.2 8.28 11.72 7.2 17.39 2.61
4.4 8.82 11.18 7.4 18.17 1.83
4.6 9.35 10.65 7.6 18.73 1.27
4.8 9.86 10.14 7.8 19.15 0.85
5.0 10.30 9.70 8.0 19.45 0.55
Na2HPO4分子量＝141.98 0.2M溶液含28.40g/L 9?xc3F2EBD
Na2HPO4·2H2O分子量＝178.05 0.2M溶液含35.61g/L
C6H8O7·H2O分子量＝210.14 0.1M溶液含21.01g/L