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प्रश्न
Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.
Heat energy
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उत्तर
Heat Energy:
On heating the reactants – the reacting particles, collide swiftly and with greater intensity.
Example:
Heat on zinc carbonate:
\[\ce{ZnCO3 ->[\triangle] ZmO + CO2 [g]}\]
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संबंधित प्रश्न
Translate the following statement into a chemical equation and then balance it.
Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.
Write your observation for the following chemical reaction and name the product formed :
When ammonium chloride is heated with sodium hydroxide.
Balance the following equation. Also name the product formed.
FeCI2 + CI2 → FeCI3
Balance the equation stepwise.
H2S2O7(l) + H2O(l) → H2SO4(l)
Balance the equation stepwise.
Ag(s) + HCl(aq) → AgCl ↓+ H2 ↑
Write the chemical equation for the following word equation and balance them.
Carbon + Oxygen → Carbon dioxide
Balance the following equation:
Fe2O3 + CO → Fe + CO2
In certain reaction a change of state is observed i.e. solid to liquid, liquid to gas etc. – State the change of state of the products – to give the respective reactant.
2H2 + O2 → 2H2O
In certain reaction an insoluble solid called precipitate is formed. State the colour and name of the precipitate formed in the following reaction involving addition of:
Dilute hydrochloric acid to silver nitrate.
Balance the following simple equation:
Fe + H2O ⇌ Fe3O4 + H2
