Balance each chemical equation. b. Co(NO₃)₃(aq) + (NH₄)₂S(aq) → Co₂S₃(s) + NH₄NO₃(aq)

Key Concepts

Balancing Chemical Equations

Balancing chemical equations involves ensuring that the number of atoms for each element is the same on both sides of the equation. This is based on the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. Coefficients are used to adjust the number of molecules or formula units to achieve balance.

Types of Chemical Reactions

Understanding the types of chemical reactions, such as double displacement, is crucial for balancing equations. In this case, the reaction between cobalt(III) nitrate and ammonium sulfide is a double displacement reaction, where the cations and anions exchange partners. Recognizing the type of reaction helps predict the products and their states.

States of Matter in Chemical Reactions

The states of matter (solid, liquid, gas, aqueous) in a chemical equation provide important information about the reactants and products. In the given equation, Co(NO3)3 and (NH4)2S are in aqueous solution, while Co2S3 is a solid precipitate. Understanding these states helps in visualizing the reaction and determining the physical changes that occur.