Balance the following chemical equations. Fe(s)+O2(g) →Fe2O3(s) PbO2(s) →PbO(s)+O2(g)

Balance the following chemical equations. Fe(s)+O2(g)...

Balance the following chemical equations. $$\begin{array}{l}\mathrm{Fe}(s)+\mathrm{O}_{2}(g) \rightarrow \mathrm{Fe}_{2} \mathrm{O}_{3}(s) \\\mathrm{PbO}_{2}(s) \rightarrow \mathrm{PbO}(s)+\mathrm{O}_{2}(g) \\\mathrm{H}_{2} \mathrm{O}_{2}(l) \rightarrow \mathrm{O}_{2}(g)+\mathrm{H}_{2} \mathrm{O}(l) \end{array}$$

Balance the following chemical equations.
$$\begin{array}{l}\mathrm{Fe}(s)+\mathrm{O}_{2}(g) \rightarrow \mathrm{Fe}_{2} \mathrm{O}_{3}(s) \\\mathrm{PbO}_{2}(s) \rightarrow \mathrm{PbO}(s)+\mathrm{O}_{2}(g) \\\mathrm{H}_{2} \mathrm{O}_{2}(l) \rightarrow \mathrm{O}_{2}(g)+\mathrm{H}_{2} \mathrm{O}(l)
\end{array}$$

Key Concepts

Chemical Reaction Types

Recognizing different types of reactions, such as synthesis, decomposition, or redox reactions, aids in the balancing process. Each reaction type might require specific strategies, like the half-reaction method for redox reactions, to correctly adjust coefficients and balance overall changes in oxidation states.

Balancing Chemical Equations

Balancing chemical equations is the method of adjusting the coefficients of reactants and products so that the number of atoms for each element is equal on both sides of the equation. This process reflects the law of conservation of mass and is essential for accurate stoichiometric calculations.

Stoichiometry

Stoichiometry involves the calculation of reactants and products in chemical reactions. It provides the quantitative relationships, derived from the balanced chemical equation, that dictate the exact proportions in which chemicals combine and yield products.

Law of Conservation of Mass

This principle states that mass is neither created nor destroyed in a chemical reaction. It is the foundational concept behind balancing chemical equations, ensuring that the number of each type of atom in the reactants is equal to that in the products.

Transcript

0:00 Hi everyone.

00:01 So in this question you have to balance the given chemical equation.

00:04 So first equation is iron solid plus oxygen gas gives fe2 -o -3 gas.

00:22 Now if you see properly there are two iron at rhs but only one iron at lhs.

00:30 Similarly two oxygen atoms are there at lhs and three auction items are there at rhs so first of all we'll balance the oxygen atoms the balanced chemical equation is so fas plus o2 gas gives fe 2 o3 gas now there are three oxygen items at rhs and two auction item at lhs so multiply you know two oxygen atom by three at lhs and two to fe to o3 now you know fe becoming four at hs and only one fe at lhs so multiply this also by four or so this is what a balanced chemical equation then second one is pb -o -2 solid gives pb -o solid plus o2 gas.

01:57 Now the balanced chemical equation is the balanced chemical equation is, you know, we'll first write skeleton equation, that is whatever given it is, then pb -o -2 solid, plus water gas no now you know auction here at left -hand side are 2 but at right side 1 plus 2 3 so you have to balance the oxygen first so in order to balance the oxygen multiply this lead oxide by 2 so you get 2 plus 2 4 oxygians the now lates are 2 at right -head side but lead the only 1 at left -hand side so multiply 2 pb o2 now there are 2 pb at lhs as well as rhs then 4 auction at lhs as well as rhs so 4 auctions so this is a balance equation then c1 that is h2 to liquid liquid gives o2 cats plus toys h2 liquid liquid now, you know, the balance equation is balanced equation is, you know, we'll rewrite this skeleton equation that is h2o2 liquid gives o2 gas plus h2 is there, plus h2 liquid...

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