what would happen if an excess of mg(oh)2 is used
If an excess of Mg(OH)2 is used in a chemical reaction, it means that more Mg(OH)2 is added than what is stoichiometrically required to react with the other reactant(s) present. This can lead to a few possible outcomes, depending on the specific reaction happening:
1. Complete reaction: If Mg(OH)2 is the limiting reactant in the reaction, adding an excess of it will ensure that all of the other reactant(s) are completely reacted. In this case, the excess Mg(OH)2 will not have any further reaction and may remain as a solid or precipitate.
2. Formation of complex or soluble salts: In some cases, the excess Mg(OH)2 may react with other ions present in the solution to form complex salts or soluble compounds. These compounds may dissolve, resulting in the formation of a new solution or precipitate.
3. No noticeable effect: In certain reactions, an excess of Mg(OH)2 may not have any significant effect on the reaction outcome. It may remain unreacted and show no observable changes.
To understand the specific consequences, it's important to consider the balanced chemical equation and the reaction conditions. Stoichiometry plays a crucial role in determining the outcomes when an excess of a reactant is used.