Identitfy the types of reaction: C2H5OH + Na = C2H5ONa + H2 //
AgCl + HNO3 = AgNO3 + HCl // N2 + H2 = NH3 //
MgCO3 = MgO + CO2 //
N2 + H2 = NH3

C2H5OH + Na = C2H5ONa + H2 - Single replacement reaction

AgCl + HNO3 = AgNO3 + HC - Double replacement reaction

N2 + H2 = NH3 - Combination reaction

MgCO3 = MgO + CO2  - Decomposition reaction

Explanation:

Single replacement reaction - The type of reaction in which one strong ion replaces the weak ion from the solution.

For example: C2H5OH + Na = C2H5ONa + H2

Double replacement reaction - The reaction in which two compounds in a solution reacts by interchanging their ions and forms a new product.

For example: AgCl + HNO3 = AgNO3 + HCl

Combination reaction - The type of reaction in which two or more compounds combine together to form a single compound.

For example: N2 + H2 = NH3

Decomposition reaction - The type of reaction in which only one compounds break down into two or more new compounds.

For example: MgCO3 = MgO + CO2

Hence, the correct answer is:

C2H5OH + Na = C2H5ONa + H2 - Single replacement reaction

AgCl + HNO3 = AgNO3 + HC - Double replacement reaction

N2 + H2 = NH3 - Combination reaction

MgCO3 = MgO + CO2  - Decomposition reaction

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