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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
What is a chemical equation ?
Balance the following equation. Also name the products formed.
`Na + H_2 O → Na OH + H_2`
Balance the following equation. Also name the products formed.
`K_2 O + H_2 O → KOH`
Write the balanced equation for the following chemical reaction.
\[\ce{Sodium + Water -> Sodium hydroxide + Hydrogen}\]
Write balanced chemical equation for the following word equation:
Magnesium + dil. sulphuric acid → Magnesium sulphate + hydrogen
Write a balanced molecular equation for the following word equation:
\[\ce{Calcium + water->Calcium hydroxide + hydrogen}\]
Balance the following equation:
\[\ce{Al + H2O->Al2O3 + H2}\]
Underline the incorrectly balanced compound equation and rewrite the correct equation.
\[\ce{2Na + 3H2O->2NaOH + H2}\]
Magnesium ribbon is rubbed before burning because it has a coating of ____________.
Which of the following are combination reactions?
- `2"KClO"_3 overset("Heat")(->) 2"KCl" + 3"O"_2`
- `"MgO" + "H"_2"O" -> "Mg"("OH")_2`
- `4"Al" + 3"O"_2 -> 2"Al"_2"O"_3`
- `"Zn" + "FeSO"_4 -> "ZnSO"_4 + "Fe"`
