Balance each of the following chemical equations:c. Sb2S3(s) + HCl(aq) → SbCl3(aq) + H2S(g)

Ch.7 Chemical Quantities and Reactions

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Timberlake 13th Edition

Ch.7 Chemical Quantities and Reactions

문제 38c

7장, 문제 38c

Balance each of the following chemical equations:
c. Sb₂S₃(s) + HCl(aq) → SbCl₃(aq) + H₂S(g)

검증된 단계별 안내

Identify the reactants and products in the chemical equation: Sb₂S₃(s) (antimony(III) sulfide) reacts with HCl(aq) (hydrochloric acid) to produce SbCl₃(aq) (antimony(III) chloride) and H₂S(g) (hydrogen sulfide).

Write the unbalanced chemical equation: Sb₂S₃(s) + HCl(aq) → SbCl₃(aq) + H₂S(g).

Balance the antimony (Sb) atoms first. There are 2 Sb atoms in Sb₂S₃ on the reactant side, so ensure there are 2 Sb atoms in SbCl₃ on the product side. Update the equation: Sb₂S₃(s) + HCl(aq) → 2 SbCl₃(aq) + H₂S(g).

Next, balance the sulfur (S) atoms. There are 3 S atoms in Sb₂S₃ on the reactant side, so ensure there are 3 H₂S molecules on the product side. Update the equation: Sb₂S₃(s) + HCl(aq) → 2 SbCl₃(aq) + 3 H₂S(g).

Finally, balance the hydrogen (H) and chlorine (Cl) atoms. Count the total H and Cl atoms on the product side (from H₂S and SbCl₃), and adjust the coefficient of HCl on the reactant side to match. Verify that all elements are balanced.

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주요 개념

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Chemical Equation

A chemical equation represents a chemical reaction using symbols and formulas. It shows the reactants on the left side and the products on the right, separated by an arrow. Balancing a chemical equation ensures that the number of atoms for each element is the same on both sides, adhering to the law of conservation of mass.

Stoichiometry

Stoichiometry is the calculation of reactants and products in chemical reactions. It involves using the coefficients in a balanced equation to determine the proportions of substances involved. Understanding stoichiometry is essential for balancing equations, as it helps identify the correct ratios of reactants and products.

Balancing Techniques

Balancing techniques are methods used to ensure that a chemical equation is balanced. Common techniques include the inspection method, where coefficients are adjusted based on the number of atoms, and the algebraic method, which uses variables to represent coefficients. Mastery of these techniques is crucial for accurately balancing chemical equations.