Answer the following question in about 100-150 words.
a) explain the following
(1). NaCI has higher melting point as compared to naphthalene?
(2). NaCI is a good conductor of electricity in molten state but not is solid state.
Answers
Answer:
1)Sodium chloride has higher melting point than naphthalene. this is because sodium chloride has electrostatic forces of attraction and thus this tends to hold the the sodium and chloride ions very strongly and thus responsible for the high melting point
2)NaCl (Sodium Chloride) in solid state don't conduct electricity as the ions remain in fixed position in solid state involving no transfer or exchange of electrons.
Explanation:
1) melting point of 80.26 °C for naphthalene … while sodium chloride has a melting point of 801 °C.
2)In order to conduct electricity a substance must have charge particles, such as electrons and ions, that are free to move freely through it. In the solid state, ionic compounds such as sodium chloride have their ions fixed in position and therefore these ions cannot move so solid ionic compounds cannot conduct electricity. However in the molten state, ions in ionic compounds are free to flow and therefore molten sodium chloride can conduct electricity