1. Describe the process of passing electric current through water with the help of a diagram.
2. Test the conductivity of electric current in lemon juice or vinegar with suitable diagram.
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Answers
Answer:
Explanation:
1)Electrolysis of water:
Electrolysis means using electric current to make a chemical reaction possible which is otherwise do not occur. Electrolysis of water means passing electric current through water to decompose it into hydrogen gas and oxygen gas.
Electrodes:
Cathode - Graphite rod
Anode - Graphite rod
Hydrogen and oxygen gases are collected at cathode and anode respectively.
Reaction:
The reaction that takes place during the process can be shown as:-
2H2O → 2H2 +O2
At cathode:- Reduction
2 H+ (aq) +2e- → H2
At anode:- Oxidation
OH- (aq) → OH + e-
4 OH → 2H2O + O2
Hope it helps u
2)Testing Conduction of Electricity in Lemon juice or Vinegar
• Collect a few small plastic or rubber caps of discarded bottles and clean them. Pour one teaspoon of lemon juice or vinegar in one cap. Bring your tester over this cap and let the ends of the tester dip into lemon juice or vinegar. Take care that the ends are not more than 1 cm apart but at the same time do not touch each other.
• When the liquid between the two ends of the tester allows the electric current to pass, the circuit and the bulb glows. When the liquid does not allow the electric current to pass, the circuit of the tester is not complete and the bulb not glow.
3) Electro-chemical process in which current is passed between two electrodes through an ionized solution (electrolyte) to deposit positive ions (anions) on the negative electrode (cathode) and negative ions (cations) on the positive electrode (anode).
Answer:
Explanation:
Electrolysis means using electric current to make a chemical reaction possible which is otherwise do not occur. Electrolysis of water means passing electric current through water to decompose it into hydrogen gas and oxygen gas ...