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प्रश्न
Why it is necessary to balance a chemical equation ?
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उत्तर
A chemical equation needs to be balanced so as to make the number of the atoms of the reactants equal to the number of the atoms of the products.
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संबंधित प्रश्न
Differentiate between:
Reactants and products.
State what is a balanced equation with a relevant example. Give a reason why an equation is balanced with reference to the law of conservation of matter.
Balance the following equation:
\[\ce{KHCO3->K2CO3 + H2O + CO2}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{FeS + 2HCl + 2FeCl2 + H2S}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{PbO2 + 4HCl->PbCl2 + H2O + Cl2}\]
Balance the following important equation:
ZnO + NaOH → Na2ZnO2 + H2O
Balance the following important equation:
\[\ce{NH4Cl + Ca(OH)2 → CaCl2 + H2O + NH3}\]
Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is
The following reaction is used for the preparation of oxygen gas in the laboratory
`2"KClO"_3("s") overset("Heat")underset("Catalyst")(->) 2"KCl"("s") + 3"O"_2 ("g")`
Which of the following statement(s) is(are) correct about the reaction ?
Complete the missing component /variable given as x and y in the following reactions
`"Zn"("s") + "H"_2"SO"_4("aq") -> "ZnSO"_4(x) + "H"_2("y")`
