Write the balanced chemical equation for the following...

Name: Problem 78, Chapter 10: General Chemistry
Uploaded: 2021-10-02T08:51:16-08:00
Duration: 1 min 54 s
Channel: Adriano Chikande
Description: Write the balanced chemical equation for the following reactions: (a) Zinc sulfide dissolves in aqueous hydrochloric acid with the emission of hydrogen sulfide gas. (b) Lead(IV) oxide decomposes to yield lead(II) oxide and a colorless gas. (c) An aqueous solution containing calcium chloride is added to dilute aqueous phosphoric acid, and a white precipitate forms.

Write the balanced chemical equation for the following reactions: (a) Zinc sulfide dissolves in aqueous hydrochloric acid with the emission of hydrogen sulfide gas. (b) Lead(IV) oxide decomposes to yield lead(II) oxide and a colorless gas. (c) An aqueous solution containing calcium chloride is added to dilute aqueous phosphoric acid, and a white precipitate forms.

Write the balanced chemical equation for the following reactions:
(a) Zinc sulfide dissolves in aqueous hydrochloric acid with the emission of hydrogen sulfide gas.
(b) Lead(IV) oxide decomposes to yield lead(II) oxide and a colorless gas.
(c) An aqueous solution containing calcium chloride is added to dilute aqueous phosphoric acid, and a white precipitate forms.

Key Concepts

Stoichiometry

Stoichiometry deals with the quantitative relationships between reactants and products in a chemical reaction. It allows chemists to calculate the amounts of substances needed or produced, ensuring that the balanced chemical equation accurately represents the mass and mole relationships in the reaction.

Balancing Chemical Equations

This concept involves ensuring that the number of atoms for each element is equal on both sides of a chemical equation, in accordance with the law of conservation of mass. It is a fundamental process in chemistry that ensures the accurate representation of chemical reactions and is necessary for all stoichiometric calculations.

Reaction Classification

Classifying chemical reactions by type—such as precipitation, decomposition, or redox—helps in predicting the products and understanding the underlying mechanisms of the reaction. Recognizing these types facilitates the formulation and balancing of chemical equations.

Precipitation Reactions

In a precipitation reaction, two aqueous reactants combine to form an insoluble solid, the precipitate, which separates from the solution. Familiarity with solubility rules is essential for predicting when and which precipitates will form in a reaction.

Decomposition Reactions

A decomposition reaction is one in which a single compound breaks down into two or more simpler substances, often releasing gases or forming simpler compounds. Understanding this type of reaction is important for analyzing reactions where a compound's constituent parts are being liberated.

Redox Reactions

Redox (oxidation-reduction) reactions involve the transfer of electrons between chemical species, resulting in changes in oxidation states. Identifying redox processes is key for understanding reactions where one species is oxidized and another is reduced, affecting the overall reaction balance and product formation.

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