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Balancing Equations: From Lead Sulfide to Ammonia Reactions
Chapter 7, Problem 35P(choose chapter or problem)
Write a balanced chemical equation for each chemical reaction.
(a) Solid lead(II) sulfide reacts with aqueous hydrochloric acid to form solid lead(II) chloride and dihydrogen sulfide gas.
(b) Gaseous carbon monoxide reacts with hydrogen gas to form gaseous methane (\(\mathrm{CH}_{4}\)) and liquid water.
(c) Solid iron(III) oxide reacts with hydrogen gas to form solid iron and liquid water.
(d) Gaseous ammonia (\(\mathrm{NH}_{3}\)) reacts with gaseous oxygen to form gaseous nitrogen monoxide and gaseous water.
Questions & Answers
QUESTION:
Write a balanced chemical equation for each chemical reaction.
(a) Solid lead(II) sulfide reacts with aqueous hydrochloric acid to form solid lead(II) chloride and dihydrogen sulfide gas.
(b) Gaseous carbon monoxide reacts with hydrogen gas to form gaseous methane (\(\mathrm{CH}_{4}\)) and liquid water.
(c) Solid iron(III) oxide reacts with hydrogen gas to form solid iron and liquid water.
(d) Gaseous ammonia (\(\mathrm{NH}_{3}\)) reacts with gaseous oxygen to form gaseous nitrogen monoxide and gaseous water.
ANSWER:Balancing chemical equations is crucial for understanding stoichiometry in chemistry. It ensures that the Law of Conservation of Mass is upheld, signifying that atoms are neither created nor destroyed in a chemical reaction.
Chemical Equation Balancing: Equal number of each type of atom on both sides of the equation.
Step 1 of 4
Solid lead(II) sulfide + hydrochloric acid
Unbalanced: \(\mathrm{PbS}(\mathrm{s})+\mathrm{HCl}(\mathrm{aq}) \rightarrow \mathrm{PbCl}_{2}(\mathrm{~s})+\mathrm{H}_{2} \mathrm{~S}(\mathrm{~g})\)
Balanced: \(\mathrm{PbS}(\mathrm{s})+2 \mathrm{HCl}(\mathrm{aq}) \rightarrow \mathrm{PbCl}_{2}(\mathrm{~s})+\mathrm{H}_{2} \mathrm{~S}(\mathrm{~g})\)
Balancing atoms: \(\mathrm{Pb}, \mathrm{S}, \mathrm{H}, \mathrm{Cl}\)
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Balancing Equations: From Lead Sulfide to Ammonia Reactions
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This video shows you how to balance equations from the reaction of lead(II) sulfide with hydrochloric acid to ammonia's interaction with oxygen. Understand the nuances of atom balancing and grasp the precise stoichiometric relationships.