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CBSE Class 10 Answered

what is electrolytes? write the difference in strong electrolytes and weak electrolytes
 
Asked by Divya Kumari | 04 Oct, 2014, 07:21: PM
answered-by-expert Expert Answer

Electrolyte is a substance which in a fused state or in an aqueous state conducts electricity. For example, electrolytic substances like NaCl, KCl, NaOH etc when dissolved in water dissociates into ions which makes it electrically conductive.

Strong Electrolytes

Weak Electrolytes

Electrolytes which allow a large amount of electricity to pass through them are called strong electrolytes.

Electrolytes which allow only a fraction of electricity to pass through them are called weak electrolytes.

They are good conductors of electricity.

They are poor conductors of electricity.

Strong electrolytes completely dissociate at moderate concentrations.

Weak electrolytes do not completely dissociate at moderate concentrations.

These electrolytes are fully ionized in solution or in molten state. Therefore, these compounds contain only ions in the solution or molten state.

These compounds are partially ionized in solution or in molten state. These electrolytes contain ions and undissociated molecules.

There are strong interionic interactions at moderate concentrations.

Interionic interactions are not strong at even higher concentrations.

Examples of strong electrolytes are: acids- dilute hydrochloric acid, dilute sulfuric acid, dilute nitric acid, etc.; alkalis- sodium hydroxide, potassium hydroxide, etc.; salts- sodium chloride, potassium chloride, sodium nitrate, lead sulfate, etc.

Examples of weak electrolytes are: acids- oxalic acid, formic acid, acetic acid, etc.; bases- ammonium hydroxide, calcium hydroxide, etc.; salts- sodium carbonate, sodium bicarbonate, calcium oxalate, sodium formate, etc.

 

 

Answered by Hanisha Vyas | 05 Oct, 2014, 10:23: PM

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