011-40705070  or  
Call me
Download our Mobile App
Select Board & Class
  • Select Board
  • Select Class
 

Give reason: a)Sodium chloride in its solid state do not conduct electricity whereas sodium chloride in its liquid state conducts electricity b)Pure water is a good conductor of electricity

Asked by Anjaly George(student) , on 12/2/14


Become Expert
Score more in Science
Start Now with Video Lessons, Sample Papers, Revision Notes & more for Class-VIII - CBSE 

EXPERT ANSWER
a) Presence of ions is necessary for the conduction of electricity. Migration of ions towards oppositively charged electrodes leads to the conduction of electricity. Solid sodium chloride has no free ions to conduct electricity but in liquid state sodium chloride dissociates into sodium and chloride ions which are responsible for the conduction of electricity. Therefore, sodium chloride in its solid state does not conduct electricity whereas sodium chloride in its liquid state conducts electricity.

b)Pure water is a good conductor of electricity
No, pure water is a poor conductor of electricity because it lacks the ions for the conduction of electricity. Impure water contains dissolved salts whose ions conduct electricity. Hence, its impure water which conducts electricity.

Posted by Anuradha Puri(MeritNation Expert)on 13/2/14

This conversation is already closed by Expert

More Answers

Purest form of water is a poor conductor of electricity because it doesn't contain any dissolved impurities.The dissolved impurities in the water make it a conductor of electricity.

Posted by Sucharith.m(student)on 12/2/14

Ask a QuestionHave a doubt? Ask our expert and get quick answers.
Show me more questions

close