The research aims to improve student learning achievement on the subject of ion equilibrium and pH of salt solution in class XI IPA SMAN 14 Pekanbaru. This type of research is an experimental study with a pretest-posttest design. The research was conducted at SMAN 14 Pekanbaru. The sample from the study was students of class XI IPA 1 as an experimental class and students in class XI IPA 3 as a …