The melting point of calcium chloride dihydrate is 176 °C (348 °F).
When heated, calcium chloride dihydrate loses its water molecules and becomes anhydrous calcium chloride. This results in a change in its physical properties, such as a decrease in solubility and an increase in hygroscopicity.
Yes, calcium chloride dihydrate can be heated multiple times. However, each time it is heated, it will continue to lose more water molecules and eventually become anhydrous calcium chloride.
The purpose of heating calcium chloride dihydrate is to remove its water molecules and create anhydrous calcium chloride, which is commonly used as a drying agent, de-icer, and in various industrial processes.
No, heating calcium chloride dihydrate is an irreversible process. Once the water molecules are removed, it cannot be reversed to its original form. However, anhydrous calcium chloride can be dissolved in water to form calcium chloride dihydrate again.