Advertisements
Advertisements
प्रश्न
Give an example with a balanced equation, of the following reaction:
electrochemical reaction
उत्तर
Example of electrochemical reaction:
(i) \[\ce{\underset{\text{acidified}}{2H2O}->[electric][current]\underset{\text{at cathode}}{2H2} + \underset{\text{at anode}}{O2}}\]
(ii) \[\ce{\underset{\text{fused}}{NaCl}⇌[electric current]\underset{\text{Ions}}{Na^1+ + Cl^1-}}\]
At Cathode: \[\ce{Na^1+ + e- ->\underset{\text{(metal)}}{Na}}\]
At Anode: \[\ce{2Cl^1- - 2e- ->Cl2}\]
APPEARS IN
संबंधित प्रश्न
State the effect of an exothermic reaction on the surroundings.
FILL IN THE BLANK
In a................ reaction heat energy is absorbed.
Explain the term with examples.
Endothermic reaction
Identify the endothermic and exothermic reaction.
HCl + NaOH → NaCl + H2O + heat
Give an example of the following chemical changes.
A photochemical reaction involving silver salt.
Differentiate between the following:
A catalyst and a promoter.
Give an example with a balanced equation, of the following reaction:
endothermic reaction
Give examples for the exothermic process.
Identify the type of chemical reaction given below:
\[\ce{2KClO3 -> 2KCl + 3O2 ^}\]
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.