Nature

Topics: Electrochemistry, Electric current, Electrolyte Pages: 6 (1289 words) Published: June 24, 2013
AIM

TO STUDY THE VARIATION OF CONDUCTANCE WITH CHANGE IN DISTANCE,MOLARITY AND TEMPRATURE.

CERTIFICATE I have the pleasure to certify that RAGHUVANSH SINGH BHALLA student of class XII (Science) of J.D. Tytler School has persuade his work and prepared the dissertation on the topic. To study the variation of conductance with change in distance, molarity and temperature . Under my supervision and guidance, this is being submitted for the complete fulfillment of the requirement for senior secondary certificate.

Supervisor Principal (Dr. Azhar Aslam Khan) (Mrs.Jennifer Tytler) Department of Chemistry J.D. Tytler School R-block new rajinder nagar New delhi

ACKNOWLEDGMENT
I take this opportunity of expressing my deep gratitude and sincere regards to Dr. Azhar Aslam khan, The faculty for chemistry for his keen and personal interest, guidance and moral support through the entire accomplishment of the work. I thank the principal to provide us the permission and appropriate equipments to complete this project successfully.

I also thank Mr. SURESH KATIYAL(faculty for eng. Graphics) and Mr. BAHADUR( the laboratory assistant) for extending his immense help.

RAGHUVANSH SINGH BHALLA
XII-C
Experimental setup

Apparatus:-
1)Glass Beaker
2)Battery
3)Rheostat
4)Water
5)Copper(Cu) Electrodes
6)Burner
7)Thermometer
8)Flask
9)Ammeter
10)Voltmeter
Chemical used:-
1)Copper sulphate(CuSO4)
2)Water
IMPORTANT TERMS
AND PRINCIPLES
INVOlVED

1)ELECTROLYSIS: The process of decomposition of electrolyte solution into ions on passing current into it is called electrolysis. The apparatus used to bring electrolysis is called an electrolytic cell.

2)ELECTROLYTIC CELL: An electrolytic cell consist of a glass vessel in which the electrolyte is in the form of an aqueous solution or in the molten state in taken. Two metal rods are dipped into it and are connected to a source of electricity i.e. battery. These rods are called electrodes. The one connected to the negative pole is called cathode and the one connected to the positive pole is called anode.

3)ELECTROLYTE: The substance which decompose into ions on passing current through it is called electrolyte.
4)OHM’S LAW: It states that the current flowing through a conductor is directly proportional to the potential difference across the ends of the conductor, provided physical conditions are constant.

IF TO THE ENDS OF THE CONDUCTOR IS APPLIED A VOLTAGE ‘E’ AND A CURRENT ‘I’ THEN THE RESISTANCE ‘R’ OF THE CONDUCTOR IS E/I

THUS ACCORDING TO THE OHM’S LAW
R= E/I
OR
OHMS=VOLTS/AMPERES
5)RESISTANCE: The obstacle offered to the current is called resistance.
6)CONDUCTANCE: The property of case of flow of current through a body is called conductance....
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