Ca+Cl2

The reaction between calcium (Ca) and chlorine gas (Cl₂) forms calcium chloride (CaCl₂). This is a typical example of a synthesis reaction, where two elements combine to form a compound.

The balanced chemical equation for this reaction is:

\[ \text{Ca} + \text{Cl}_2 \rightarrow \text{CaCl}_2 \]

In this reaction:

• One calcium atom reacts with one molecule of chlorine gas (which consists of two chlorine atoms) to produce one formula unit of calcium chloride.
• Calcium chloride is an ionic compound composed of calcium ions (Ca²⁺) and chloride ions (Cl⁻).

To summarize:

• Reactants: Calcium and chlorine gas
• Product: Calcium chloride (CaCl₂)

This reaction is exothermic, meaning it releases energy in the form of heat. Calcium chloride is widely used in various applications, including as a desiccant, in de-icing agents, and in swimming pools.