The element indium is to be obtained by electrolysis of a molten halide of the element. Passage of a current of 3.20 A for a period of 40.0 min results in formation of 3.05 g of In. What is the oxidation state of indium in the halide melt ? (At.wt of In = 114.81)
Silver is monovalent and has atomic mass of 108. Copper is divalent and has an atomic mass of 63.6. The same electric current is passed for the same length of time through a silver couloment and a copper coulometer. If 27.0 g of silver is deposited, then the corresponding amount of copper deposited is
0.066 g of metal was deposited, when a current of 2 A is passed through a metal ion solution for 100s. What is the electrochemical equivalent (in g-C^(-1) ) of the metal?
An electric current is passed through silver nitrate soultion using silver electrodes. 10.79 g of silver was found to be deposited on the cathode if the same amount of electricity is passed through copper sulphate solution using copper electrodes, the weight of copper deposited on the cathode is
One ampere of current is passed for 9650 sec. through molten AlCl_(3) . What is the weight is grams of Al deposited at cathode ?
A current of 0.5 ampere when passed through AgNO_(3) solution for 193 seconds deposited 0.108 g. of silver. The equivalent weight of Ag is
A current of 2 ampere passing for 5 hr through a molten tin salt deposits 22.2 g of tin. Find the oxidation number of tin (atomic weight of tin is 118.7) in the salt
When X amperes of current is passed through molten for 96.5s, 0.09 g of aluminium is deposited. What is the value of X?
A current of 19296 C is passed through an aqueous solution of copper sulphate using copper electrodes . What is the mass (in g) of copper deposited at the cathode ? (molar mass of Cu = 63.5 g mol^(-1) )
