Chemistry
What is the difference between Modern explanation and Arrhenius explanation for the theory of electrolysis
Electrolysis
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Answer
| Modern explanation | Arrhenius explanation |
|---|---|
| Modern concept considers that electrolytes are ionic even in solid state and their ions are held by strong electrostatics forces which make them immobile. Water renders these ions mobility by breaking the electrostatic forces. | Arrhenius considered that water ionises electrolytes |
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Related Questions
Fill in the blanks:
(a) Powdered sodium chloride (common salt) does not conduct an electric current, but it does so when …………… or when …………… .
(b) Molten lead bromide conducts electricity. It is called an ……………. It is composed of lead …………… and bromide ……………. The lead ions are …………… charged and are called ……………. The bromide …………… are …………… charged and are called …………….
(c) Substances which conduct electricity in the solid state are generally …………….
(d) The electron releasing tendency of zinc is …………… than that of copper.
(e) A solution of HCl gas in water conducts electricity because ……………, but a solution of HCl gas in toluene does not conduct an electric current because …………….
(f) Pure water consists entirely of …………… (ions/molecules).
(g) We can expect that pure water …………… (will/will not) normally conduct electricity.
(h) Electrolysis is the passage of ……………. (electricity/electrons) through a liquid or a solution accompanied by a ……………. (physical/chemical) change.
Define the following terms:
(a) Electrolysis
(b) Non-electrolyte
(c) Cation and anion
(d) Weak electrolyte
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