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प्रश्न
What are the ways by which a chemical equation can be made more informative ?
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उत्तर
A chemical equation can give more information in the following ways:
- The physical state of the reactants and products can be indicated by putting (s) for solid, (l) for liquid, (g) for gas and (aq) for aqueous state.
- Evolution or absorption of heat during the reaction can be denoted by adding or subtracting a heat term on the product side.
- Temperature, pressure and catalyst can be indicated above the arrow (→ or =) separating the reactants and products.
- Concentration of reactants and products is indicated by adding word (dil) for dilute and (conc) for concentrated before their formulae.
- By the sign \[\ce{-> or <=>}\] information about irreversible and reversible reactions can be obtained.
APPEARS IN
संबंधित प्रश्न
Write the balanced equation for the following chemical reaction.
\[\ce{Hydrogen + Chlorine -> Hydrogen chloride}\]
Write a balanced molecular equation for the following word equation:
\[\ce{Calcium + water->Calcium hydroxide + hydrogen}\]
Balance the following equation:
\[\ce{Fe2O3 + H2->Fe + H2O}\]
Balance the following equation:
\[\ce{FeCl3 + NaOH->NaCl + Fe(OH)3}\]
Balance the following important equation:
CuSO4 + NaOH → Na2SO4 + Cu(OH)2
Balance the following important equation:
ZnO + NaOH → Na2ZnO2 + H2O
Balance the following important equation:
Al + Cl2 → AlCl3
Balance the following important equation:
C + H2SO4 (conc.) → CO2 + H2O + SO2
Which of the following is true for an unbalanced chemical equation?
Which of the following is(are) an endothermic process(es)?
- Dilution of sulphuric acid
- Sublimation of dry ice
- Condensation of water vapours
- Evaporation of water
