Question

Arrange distilled water, seawater, tap water and rainwater in the increasing order of their electrical conductivity. Support your answer with a suitable explanation/reason.

Answer 1

Answer:

distilled water ;rain water; tap water ;sea water

Explanation:

because of their purety

Answer 2

From the order of highest to lowest electro-negativity :

Distilled water > Rainwater > Tap water > Seawater.

EXPLANATION

• Electronegativity is the tendency of a chemical compound to attract free electrons or ions towards itself.
• Conduction of electricity is inversely proportional to the electro-negativity of the compound.
• Distilled water is a purified form of water, the Molecules of H₂O do not dissociate into H⁺ as well OH⁻ ions
• Hence, the electronegativity of Distilled water is highest.
• Rainwater has impurities such as a small amount of acid and dissolved salts that disassociates into anions and Cation.
• Hence, the electronegativity of Rainwater is slightly lower than that of distilled water.
• Tap water has a lot of impurities in the form od calcium or magnesium salts which remains dissociated in the ion form, these ions serve as a carrier for electricity to pass. Hence the electronegative value of Tap water is lower than that of Rainwater.
• Seawater has the lowest electro negativity as a large number of salts are dissolved in it which serve as electrolytes that can conduct electricity.

Hence, the correct order of electro negativity is - Distilled water > Rainwater > Tap water > Seawater.

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