本文讨论了水样中总碱度含量与滴定等当点的变化关系和甲基橙在不同PH值时的颜色变化情况。
The article discussed the changing relation between total alkalinity content and titration equivalence point and changed situation of methyl orange in the different PH value color.
可从第一次出现在正在被滴定的溶液中的稳定的微红色来鉴别等当点。
The equivalence point is identified from the first faint pink color that persists in the solution being titrated.
我们在实验中发现：第一等当点与第二等当点之间的滴定点有较高的准确度。
According to the experiments, it is found that the titration points between the first equivalence point and the second are more accurate.
研究了测定碳化液中石油助长剂活性组份含量的方法——酸碱滴定法的测定条件和干扰因素； 确定了石油助长剂活性组份为一元弱酸盐，测得了对应的一元弱酸的离解常数和用强碱滴定时的等当点。
The conditions and interfering factors of the acid base titration method which has been used to determine the active components of the petrol growth substance in the carbonating solution were studied.
研究了测定碳化液中石油助长剂活性组份含量的方法——酸碱滴定法的测定条件和干扰因素； 确定了石油助长剂活性组份为一元弱酸盐，测得了对应的一元弱酸的离解常数和用强碱滴定时的等当点。
The conditions and interfering factors of the acid base titration method which has been used to determine the active components of the petrol growth substance in the carbonating solution were studied.
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