这种化学计算是使用表格法,其原理是根据化学反应是等当量进行的,即N_lV_l=N_2V_2 N_l—标定溶液的浓度(已知) V_1—标定溶液滴定到反应完全时所消耗的体积(可读出) N_2—被测定溶液的浓度(未知) V_2—被测定溶液(通常是水样)的体积。 V_2通常50ml或25ml。 显然,从上式看出,其中仅N_2为未知数其余的都为已知数,因而他们之间一定是一直线关系(一次方程式)。五个方格纸划出。 This stoichiometry is the use of tabular method, the principle is based on the chemical reaction is equivalent, namely N_lV_l = N_2V_2N_l-calibration solution concentration (known) V_1-calibration solution titration to the volume consumed when the reaction is complete Read) N_2 - concentration of the solution to be measured (unknown) V_2 - volume of the solution to be measured (usually water). V_2 is usually 50ml or 25ml. Obviously, it can be seen from the above formula that only N_2 is unknown and the others are all known numbers. Therefore, they must be in a linear relationship (the first-order equation). Five squared paper draws.