Abstract Under different pH conditions, the main species in the system need to be paid more attention when writing chemical reaction equations. When the ionization equilibrium produced by conjugate acid-base pair moves, hydrogen ions or hydroxide ions are generated to balance chemical equations. Species can or cannot appear when writing equations are discussed in detail. The general rule of writing equations gradually appears after the equations in the college entrance examination and national chemistry competition in recent years are carefully discussed with the revise of some equations.
WANG Lin, CHEN Xiao-Feng, FANG Min, BAO Jian-Chun, SU Zhi, WU Yong. Writing Rules of Equations Under Different pH Conditions[J]. Chinese Journal of Chemical Education, 2021, 42(7): 100-103.
