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प्रश्न
What are the various ways in which a chemical equation can be made more informative? Give examples to illustrate your answer.
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उत्तर
The various ways in which a chemical equation can be made more informative are:
- By indicating the physical states of the reactants and products.
Example: Gaseous state is indicated by the symbol (g).
\[\ce{Zn_{(s)} + H2SO4_{(aq)} -> ZnSO4_{(aq)} + H2_{(g)}}\] - By indicating the heat changes taking place in the reaction.
Example: An exothermic reaction is indicated by writing +Heat, or +Heat energy, or +Energy on the products side of an equation.
\[\ce{C_{(s)} + O2_{(g)} -> CO2_{(g)} + Heat}\] - By indicating the conditions under which the reaction takes place.
Example: Delta (Δ) stands for heat, which is written over the arrow of the equation.
\[\ce{2KClO3_{(s)} ->[\Delta][MnO2] 2KCl_{(s)} + 3O2_{(g)}}\]
APPEARS IN
संबंधित प्रश्न
Correct and balance the following equation:
\[\ce{N + H -> NH3}\]
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- Name the substance which the yellow solid consists of.
- Which characteristic of chemical reactions is illustrated by this example?
- Write a balanced chemical equation for the reaction which takes place. Mention the physical states of all the reactants and products involved in the chemical equation.
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What is a product in a chemical equation?
