Balance each of the following chemical equations: a. Zn(s)+HNO3(a q) ⟶H2(g)+Zn(NO3)2(a q) b. Al(

step 1 So for this question, we're given an equation and we have to balance it, which means we need to

Balance each of the following chemical equations: a....

Balance each of the following chemical equations: a. $\mathrm{Zn}(s)+\mathrm{HNO}_{3}(a q) \longrightarrow \mathrm{H}_{2}(g)+\mathrm{Zn}\left(\mathrm{NO}_{3}\right)_{2}(a q)$ b. $\mathrm{Al}(s)+\mathrm{H}_{2} \mathrm{SO}_{4}(a q) \longrightarrow \mathrm{H}_{2}(g)+\mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3}(a q)$ c. $\mathrm{K}_{2} \mathrm{SO}_{4}(a q)+\mathrm{BaCl}_{2}(a q) \longrightarrow \mathrm{BaSO}_{4}(s)+\mathrm{KCl}(a q)$ d. $\mathrm{CaCO}_{3}(s) \longrightarrow \mathrm{CaO}(s)+\mathrm{CO}_{2}(g)$ e. $\mathrm{AlCl}_{3}(a q)+\mathrm{KOH}(a q) \longrightarrow \mathrm{Al}(\mathrm{OH})_{3}(s)+\mathrm{KCl}(a q)$

Balance each of the following chemical equations:
a. $\mathrm{Zn}(s)+\mathrm{HNO}_{3}(a q) \longrightarrow \mathrm{H}_{2}(g)+\mathrm{Zn}\left(\mathrm{NO}_{3}\right)_{2}(a q)$
b. $\mathrm{Al}(s)+\mathrm{H}_{2} \mathrm{SO}_{4}(a q) \longrightarrow \mathrm{H}_{2}(g)+\mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3}(a q)$
c. $\mathrm{K}_{2} \mathrm{SO}_{4}(a q)+\mathrm{BaCl}_{2}(a q) \longrightarrow \mathrm{BaSO}_{4}(s)+\mathrm{KCl}(a q)$
d. $\mathrm{CaCO}_{3}(s) \longrightarrow \mathrm{CaO}(s)+\mathrm{CO}_{2}(g)$
e. $\mathrm{AlCl}_{3}(a q)+\mathrm{KOH}(a q) \longrightarrow \mathrm{Al}(\mathrm{OH})_{3}(s)+\mathrm{KCl}(a q)$

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Key Concepts

Chemical Reaction Types

Understanding the different types of chemical reactions, such as single-displacement (redox), double-displacement (precipitation), and decomposition reactions, provides insight into the nature of the reactions and aids in the systematic approach required when balancing the corresponding chemical equations.

Conservation of Mass

This principle states that matter cannot be created or destroyed in a chemical reaction, meaning that the number of atoms for each element must be the same on both the reactant and product sides. It is the fundamental basis for balancing chemical equations as it ensures that the mass remains constant throughout the reaction.

Stoichiometry

Stoichiometry involves the quantitative relationships between reactants and products in a chemical reaction. By applying stoichiometric principles, one determines the correct coefficients needed to balance the chemical equation, ensuring that the amounts of all substances are represented in the correct proportions.

Balancing Chemical Equations

Balancing chemical equations is the process of ensuring that the same number of atoms of each element appears on both sides of a chemical reaction. This involves adjusting the stoichiometric coefficients of the reactants and products to satisfy the law of conservation of mass.

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