The equation MgCO3 + MgCl2 -> 2MgCl2 + CO2

1. Detailed Information about the Reaction Equation MgCO₃ + MgCl₂ -> 2MgCl₂ + CO₂

This is a chemical reaction equation between Magnesium carbonate (MgCO₃) and Magnesium chloride (MgCl₂) which produces Magnesium chloride (MgCl₂) and Carbon dioxide gas (CO₂).

2. Reaction Conditions

This reaction requires high temperature to occur (around 1200-1300 degrees Celsius). Under the influence of heat, magnesium carbonate will decompose to create magnesium oxide and carbon dioxide gas.

3. Reaction Process

When the temperature is high enough, Magnesium carbonate (MgCO₃) will decompose to create Magnesium oxide (MgO) and Carbon dioxide gas (CO₂). Then, Magnesium oxide continues to react with Magnesium chloride (MgCl₂) to form Magnesium chloride (MgCl₂).

MgCO₃ -> MgO + CO₂ ->
MgO + MgCl₂ -> 2MgCl₂

4. Observable Phenomena

During the reaction process, there will be a phenomenon of white smoke due to the release of Carbon dioxide gas. In addition, if the reaction is carried out in a sealed container, the pressure inside the container will increase due to the production of gas.

Note: The equation you provided seems to have some errors. According to basic chemical formulas, the reaction of Magnesium carbonate (MgCO₃) with Magnesium chloride (MgCl₂) will not produce more Magnesium chloride (MgCl₂) and Carbon dioxide gas (CO₂).