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1.2

Minor Versionm

by Procheta Mallik

Introduction

Electrical conductivity of different acids using a simple circuit

    • Concentrated HCL is toxic and corrosive so use goggles and glouse while handling

    • Handle the breakable material carefully

    • Sodium Hydroxide (NaOH) is a highly reactive and caustic substance. Handle the flakes and solution with extreme care and caution

    • Gloves are compulsory while handling NaOH

    • The ends of the copper wires might be sharp and delicate, be careful while handling them.

  1. Take an open circuit Take 2ml of vinegar in a bottle cap Insert free ends of the copper wire in the bottle cap
    • Take an open circuit

    • Take 2ml of vinegar in a bottle cap

    • Insert free ends of the copper wire in the bottle cap

    • LED starts glowing which indicates vinegar is a conductor''

  2. Take an open circuit Take 1/4 th spoon of ascorbic acid and dissolve in 20ml water Take 2ml  solution in a bottle cap
    • Take an open circuit

    • Take 1/4 th spoon of ascorbic acid and dissolve in 20ml water

    • Take 2ml solution in a bottle cap

    • Insert free ends of the copper wire in the bottle cap

    • LED starts glowing which indicates citric acid is a conductor

  3. Take an open circuit Take 2 drops of concentrated HCL  in a 50 ml water Take 2ml of dilute Hcl in a bottle cap
    • Take an open circuit

    • Take 2 drops of concentrated HCL in a 50 ml water

    • Take 2ml of dilute Hcl in a bottle cap

    • Insert free ends of the copper wire in the bottle cap

    • LED starts glowing which indicates dilute Hcl is a conductor

  4. Take an open circuit Take 1g of NaOH crytal in 50 ml water Take 2 ml of above solution in a bottle cap
    • Take an open circuit

    • Take 1g of NaOH crytal in 50 ml water

    • Take 2 ml of above solution in a bottle cap

    • Insert free ends of the copper wire in the bottle cap

  5. Take an open circuit Take 3g of cao powder in 20 ml water. Mix well and leave it for 10mins Take 2 ml of clear solution from the top into bottle cap
    • Take an open circuit

    • Take 3g of cao powder in 20 ml water. Mix well and leave it for 10mins

    • Take 2 ml of clear solution from the top into bottle cap

    • Insert free ends of the copper wire in the bottle cap

    • LED starts glowing which indicates calcium hydroxide is a conductor''

    • Connection of wire with batteries and and safety pin should be intact

    • Test the conductivity for easily available materials like lemon, potato etc

    • Compare the intensity of LED light for different conductors

Finish Line

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