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प्रश्न
Differentiate between the following:
Electrolytic decomposition and photochemical decomposition.
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उत्तर
Electrolytic decomposition and photochemical decomposition:
- Electrolytic decomposition : “A chemical reaction which takes place with absorption of electrical energy”
\[\ce{\underset{\text{collected at}}{2H2O}->[electric][current]\underset{\text{cathode}}{2H2} + \underset{\text{anode}}{O2}}\] - Photochemical decomposition: “A chemical reaction which takes place with the absorption of light energy”
\[\ce{H2 + Cl2->[sunlight]2HCl}\]
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संबंधित प्रश्न
Define exothermic reactions. Give two examples of each.
What do you observe when ammonium chloride is dissolved in water.
Identify the endothermic and exothermic reaction.
HCl + NaOH → NaCl + H2O + heat
Give scientific reasons.
While preparing dil. Sulphuric acid from concentrated conc. sulphuric acid in the laboratory the concentrated sulphuric acid is, add slowly to water with constant stirring.
Give an example of the following chemical changes.
An exothermic and an endothermic reaction involving carbon as one of the reactants.
State the following reaction whether heat is evolved or absorbed –
Two neutral gases on passage through an electric are given nitric oxide.
Give an example of an endothermic reaction.
Select the correct answer from the options given below:
State the gaseous product formed, when
An exothermic reaction takes place between ammonia and neutral gas.
Write an Explanation.
Endothermic reaction
Give scientific reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
