N2+3H2=2NH3 what type of a reaction is this?

synthesis

The equation N2 + 3H2 = 2NH3 represents the reaction between nitrogen gas (N2) and hydrogen gas (H2) to form ammonia gas (NH3). This reaction is known as a synthesis reaction or a combination reaction.

To determine the type of reaction, you need to analyze the chemical equation and identify the reactants and products involved. In a synthesis or combination reaction, two or more substances combine to form a single product. In this case, nitrogen gas and hydrogen gas are reacting together to produce ammonia gas.

Additionally, it is important to note that the reaction is balanced, meaning that the number of atoms on both sides of the equation is the same. This balanced equation indicates that the reaction follows the law of conservation of mass, where the total mass of the reactants equals the total mass of the products.