亚硫酸钠溶液的保存１实验原理：在酸性介质中，利用亚硫酸钠的还原性，将ＭｎＯ－４离子还原产Ｍｎ２＋离子的原理，检验亚硫酸钠溶液浓度的变化。根据使用量的多少，可判断溶液浓度的变化。亚硫酸钠溶液用量少，还原能力强，浓度大。反之用量增加，还原能力减弱，浓度降... Preservation of sodium sulfite solution 1 Principle of the experiment: In an acidic medium, the principle of reducing MnO-4 ions to produce Mn2 + ions is examined by using the reducibility of sodium sulfite and the change of the concentration of sodium sulfite solution. According to the amount of use, you can determine the changes in solution concentration. Sodium sulfite solution with less reduction ability, concentration. Conversely, the amount increased, reduced ability to reduce concentration ...