Abstract This paper used control variable method to explain how to adjust a eudiometer. Firstly controlled the height of liquid level through clipped a stop clip on the rubber tube,and reduced variables. When the adjustment of the right tube was completed,fixed the right tube and opened the stop clip,so that the liquid level automatically adjusted to the same height through the pressure difference.
WU Qiang, WANG Zhi-Xiang. Using Control Variable Method to Explain Adjustment of Eudiometer[J]. Chinese Journal of Chemical Education, 2018, 39(17): 71-72.
