- Definition of Zn(OH)2
Zn(OH)2, also known as zinc hydroxide, is a white, odorless solid that is insoluble in water, but soluble in strong acid or base. Its English name is Zinc Hydroxide. The molar mass of Zn(OH)2 is 99.424 g/mol. The molecular structure consists of one zinc atom (Zn) and two hydroxide atoms (OH). Zn(OH)2 has an ionic structure consisting of a zinc ion Zn2+ and two hydroxide ions OH-.
- Properties of Zn(OH)2
2.1 Physical properties of Zn(OH)2: Zn(OH)2 is a white, odorless solid. Its pH is approximately 7, indicating that it is a neutral substance.
2.2 Chemical properties of Zn(OH)2: Zn(OH)2 can react with acids to form salts and water. It can also react with metals to form salts and hydrogen.
- Common chemical equations of Zn(OH)2
Zn(OH)2 can react with acids such as HCl, H2SO4 to form salts ZnCl2, ZnSO4 and water:
Furthermore, Zn(OH)2 also reacts with non-metals such as O2, S to form zinc oxide and sulfide:
- Preparation of Zn(OH)2
4.1 Laboratory preparation of Zn(OH)2: Zn(OH)2 can be prepared by reacting Zn with water:
4.2 Industrial preparation of Zn(OH)2: In industry, Zn(OH)2 is usually prepared by reacting Zn with a solution of NaOH: