Chemistry · Electrolytic and metallic conduction, conductance in electrolytic solutions, molar conductivities and their variation with concentration, Kohlrausch's law and its applications
On passing a current through molten KCI of is deposited. The amount of deposited
On passing a current through molten KCI \( 19.5 \mathrm{g} \) of \( \mathrm{K} \) is deposited. The amount of \( \mathrm{Al} \) deposited by the same quantity of electricity if passed through molten AlCl is :
- A. \( 4.5 \mathrm{g} \)
- B. \( 9.0 \mathrm{g} \)
- C. \( 13.5 \mathrm{g} \)
- D. 27 g
Step-by-step solution
Same quantity of electricity deposits equivalent weights of substances. Equivalent weight of K = 39/1 = 39, of Al = 27/3 = 9. Given 19.5 g K (0.5 equivalents), mass of Al = 0.5 × 9 = 4.5 g.
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