Why neutralization and precipitation are not redox reaction?
Mizi, for oxidation or reduction to occur, electrons have to be involved. Either they are lost or gained, and as you probably know, loosing electrons is defined as oxidation and gaining electrons as reduction. In the two examples you give, the substances have already lost or gained electrons and exist as charged particles in solution; they just switch partners. For example, in the classic definition of neutralization, a base contains ( OH- ) ions and an acid contains ( H+ ) ions. If they combine there are no electrons transferred so no oxidation or reduction takes place, and the remaining ions also combine with no electron shifts. Precipitation reactions are exactly the same except that when certain ions in solution combine,( with no electrons exchanged), the substance formed is insoluble and precipitates.
