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目前,绝大多数的教科书和资料都指出电导池常数J的理论值可由电导池的两个电极板(下称极板)间有效距离L和空间截面积A按下式算出,即: 在实际工作中,电导池常数J的实验测试值由下式确定: 式中,K——氯化钾标准溶液的电导率; G——仪器指示的电导值。但对日常所使用的电导池,理论计算值与实验测试值比较,相差比较大,见下表。通过表中电导池常数的比较可知,理论计算值比实验测试值大2倍左右。经实验证实,
At present, the vast majority of textbooks and materials indicate that the theoretical value of the cell constant J can be calculated from the effective distance L between the two electrode plates (hereinafter referred to as the plate) and the space cross-sectional area A of the conductivity cell according to the following formula: In the work, the experimental test value of the conductivity cell constant J is determined by the following formula: where K is the conductivity of the potassium chloride standard solution and G is the conductance value instructed by the instrument. However, for the daily use of the conductivity of the pool, the theoretical calculation and experimental test value comparison, the difference is relatively large, see the table below. Through the comparison of the conductance cell constant in the table, the theoretical calculation value is about 2 times larger than the experimental value. Experimental confirmed,