Questions in electrochemistry

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Same quantity of current is passed through molten $NaCl$ and molten cryolite containing $A{{l}_{2}}{{O}_{3}}$. If 4.6 g of sodium were liberated in one cell, the mass of aluminium liberated in other cell was
Silver is removed electrically from 200 ml of a 0.1 N solution of $AgN{{O}_{3}}$ by a current of 0.1 Ampere. How long will it take to remove half of the silver from the solution
When an electric current is passed through acidified water. 112 ml of hydrogen gas at NTP is collected at the cathode in 965 seconds. The current passed in Amperes, is
How many atoms of calcium will be deposited from a solution of $CaC{{l}_{2}}$ by a current of 25 milliamperes flowing for 60 seconds
What is the amount of chlorine evolved when 2 Amperes of current is passed for 30 minutes in an aqueous solution of $NaCl$
A solution of a salt of a metal was electrolysed for 150 minutes with a current of 0.15 Amperes. The weight of metal deposited was 0.783 gm. The equivalent weight of the metal is
If 0.5 Amp current is passed through acidified silver nitrate solution for 10 minutes. The mass of silver deposited on cathode, is (eq. wt. of silver nitrate = 108)
If a steady current of $15.0 A$ is passed through an aqueous solution of $CuS{{O}_{4}}$, how many minute will it take to deposit $0.250 mol$ of $Cu$ at the cathode, assuming $100%$ efficiency
On passing a current through $KCl$ solution, 19.5 g of potassium is deposited. If the same quantity of electricity is passed through a solution of aluminium chloride, the amount of aluminium deposited is
In order to separate oxygen from one mole of $H_2O$ the required quantity of coulomb would be

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