Complete and balance these equations: (a) Fe2 O3(s)+HBr(a q) ⟶(b) Al(s)+H2 SO4(aq) ⟶(c) NaOH(a q

step 1 Okay, easy question. We just have to balance the given equation. Sodium hydride plus water. We h

Complete and balance these equations: (a) Fe2 O3(s)+HBr(a q)...

Complete and balance these equations: (a) $\mathrm{Fe}_2 \mathrm{O}_3(s)+\mathrm{HBr}(a q) \longrightarrow$ (b) $\mathrm{Al}(s)+\mathrm{H}_2 \mathrm{SO}_4(\mathrm{aq}) \longrightarrow$ (c) $\mathrm{NaOH}(a q)+\mathrm{H}_2 \mathrm{CO}_3(\mathrm{aq}) \longrightarrow$ (d) $\mathrm{Ba}(\mathrm{OH})_2(\mathrm{~s})+\mathrm{HClO}_4(\mathrm{aq}) \longrightarrow$ (e) $\mathrm{Mg}(s)+\mathrm{HClO}_4(a q) \longrightarrow$ (f) $\mathrm{K}_2 \mathrm{O}($ s) $+\mathrm{HI}(a q) \longrightarrow$

Complete and balance these equations:
(a) $\mathrm{Fe}_2 \mathrm{O}_3(s)+\mathrm{HBr}(a q) \longrightarrow$
(b) $\mathrm{Al}(s)+\mathrm{H}_2 \mathrm{SO}_4(\mathrm{aq}) \longrightarrow$
(c) $\mathrm{NaOH}(a q)+\mathrm{H}_2 \mathrm{CO}_3(\mathrm{aq}) \longrightarrow$
(d) $\mathrm{Ba}(\mathrm{OH})_2(\mathrm{~s})+\mathrm{HClO}_4(\mathrm{aq}) \longrightarrow$
(e) $\mathrm{Mg}(s)+\mathrm{HClO}_4(a q) \longrightarrow$
(f) $\mathrm{K}_2 \mathrm{O}($ s) $+\mathrm{HI}(a q) \longrightarrow$

Key Concepts

Redox Reactions

Redox (reduction-oxidation) reactions involve the transfer of electrons between chemical species. In many reactions involving metals and acids, the metal is oxidized while the hydrogen ions are reduced, leading to the generation of hydrogen gas. Understanding these electron transfer processes is key to identifying and balancing such reactions.

Acid-Base Neutralization Reactions

Acid-base reactions involve the reaction between an acid and a base to produce a salt and water. Recognizing these reactions and understanding the typical products formed, such as salts and water, is crucial for completing and balancing these types of equations.

Single Replacement Reactions

Single replacement reactions occur when one element replaces another in a compound, typically seen when a metal reacts with an acid to produce a salt and hydrogen gas. Recognizing these patterns helps in predicting the products and balancing the equation accurately.

Stoichiometry

Stoichiometry involves the calculation of reactants and products in chemical reactions using the balanced chemical equation as a guide. It ensures that the ratio of molecules or moles corresponds correctly based on the coefficients of the balanced equation.

Conservation of Mass

This principle states that in a chemical reaction, matter is neither created nor destroyed. When balancing chemical equations, one must ensure that the number of atoms of each element is the same on both sides of the reaction, which requires adjusting the coefficients appropriately.

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