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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.

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  1. Take an open circuit
    • 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''

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    • 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

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    • 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

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    • 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

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    • 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''

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

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

    • Compare the intensity of LED light for different conductors

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Finish Line

Suchitha Vishwa

Member since: 05/02/2017

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