Chemistry
Explain why:
(a) Cu, though a good conductor of electricity, is a non electrolyte.
(b) Solid sodium chloride does not allow electricity to pass through.
Answer
(a) Copper does not undergo chemical decomposition due to flow of electric current through it. Hence, copper is a good conductor of electricity but it is a non-electrolyte.
(b) In solid sodium chloride, ions Na+ and Cl- are not free to move due to the strong electrostatic forces. Hence, solid sodium chloride does not allow electricity to pass through it.
Related Questions
Electrolysis is a redox process. Explain.
Classify the following substances under three headings:
(a) strong electrolytes
(b) weak electrolytes
(c) non-electrolytes
Acetic acid, ammonium chloride, ammonium hydroxide, carbon tetrachloride, dilute hydrochloric acid, sodium acetate, dilute sulphuric acid.
Complete and state whether the reaction is oxidation or reduction.
(a) Cl- - e- - ⟶ ……………
(b) Al - …………… ⟶ Al3+
(c) Pb2+ + …………… ⟶ Pb
(d) Sn4+ + …………… ⟶ Sn2+Name two substances in each case:
(a) Contain only molecule
(b) Contain only ions
(c) Contain ions as well as molecules