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Ch.22 - Chemistry of the Nonmetals
Brown - Chemistry: The Central Science 14th Edition
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Brown 14th EditionCh.22 - Chemistry of the Nonmetals문제 81
22장, 문제 81

Complete the exercises below. Write a balanced equation for the reaction of each of the following compounds with water: f. Mg₃N₂ (s).

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Step 1: Identify the reactants and products. The compound given is magnesium nitride (Mg₃N₂), which reacts with water (H₂O). The products of this reaction are magnesium hydroxide (Mg(OH)₂) and ammonia (NH₃).
Step 2: Write the unbalanced chemical equation for the reaction. Start by writing the reactants and products: Mg₃N₂ (s) + H₂O (l) → Mg(OH)₂ (s) + NH₃ (g).
Step 3: Balance the magnesium atoms. There are 3 magnesium atoms in Mg₃N₂, so you need 3 Mg(OH)₂ on the product side: Mg₃N₂ (s) + H₂O (l) → 3 Mg(OH)₂ (s) + NH₃ (g).
Step 4: Balance the nitrogen atoms. There are 2 nitrogen atoms in Mg₃N₂, so you need 2 NH₃ on the product side: Mg₃N₂ (s) + H₂O (l) → 3 Mg(OH)₂ (s) + 2 NH₃ (g).
Step 5: Balance the hydrogen and oxygen atoms. Count the total number of hydrogen and oxygen atoms on both sides and adjust the number of water molecules accordingly to ensure both sides are balanced.

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Hydrolysis Reaction

A hydrolysis reaction involves the reaction of a compound with water, resulting in the breakdown of that compound. In the case of metal nitrides like Mg₃N₂, hydrolysis leads to the formation of metal hydroxides and ammonia. Understanding this process is crucial for predicting the products of the reaction with water.
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Balancing Chemical Equations

Balancing chemical equations is essential to ensure that the law of conservation of mass is upheld, meaning the number of atoms of each element must be the same on both sides of the equation. This involves adjusting coefficients in front of compounds to achieve balance. Mastery of this skill is necessary for accurately representing chemical reactions.
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Stoichiometry

Stoichiometry is the quantitative relationship between reactants and products in a chemical reaction. It allows chemists to calculate the amounts of substances consumed and produced in a reaction. In the context of the given question, stoichiometry helps determine the correct ratios of magnesium hydroxide and ammonia produced from the hydrolysis of Mg₃N₂.
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Stoichiometry Concept
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