In an electrolysis of acidulated water, 4.48 L of hydrogen was produced by passing a current of 2.14A. How many hours the current was passed?

In the electrolysis of acidulated water, it is desired to obtain hydrogen at the rate of 1cc per second at STP conditions. What should be the current passed?

H_2 (g) and O_2 (g), can be produced by the electrolysis of water. What total volume (in L) of O_2 and H_2 are produced at 1 atm and 273K when a current of 30 A is passed through a K_2SO_4 (aq) solution for 193 min?

Cadmium amalgam is prepared by electrolysis of a sodium of CdCl_2 using a mercury cathode. How long should a current of 4 A be passed in order to prepare 10% by mass Cd in Cd-Hg amalgam on cathode of 4.5 g Hg? (atomic mass of Cd=112)

The direction of magnetic field produced on passing electric current in a conductor is determined by

Give the equations of two lines passing through (2, 14). How many more such lines are there, and why?

Electrolysis of dilute aqueous NaCl solution was carried out by passing 10 miliampere current. The time required to liberate 0.01 mol of H_2 gas at the cathdoe is

A beam of electron is moving with a velocity of 3xx10^6ms^-1 and carries a current of 1muA . How many electrons per second pass a given point ?

Silver is electrodeposited on a metallic vessel of total surface area 800cm^2 by passing a current of 0.2 ampere for 3 hours. Calculate the thickness of silver deposited given density is 10.47g/cc. (At. Wt. of Ag=107.92).

A current of 3A was passed through a solution of AuCl_4^- ions using gold electrolyte and it caused deposition of 1.234g of Au. The time for which the current was passed is

Three electrolytic cells A,B and C containing electrolyses of zinc sulphate, silver nitrate and copper sulphate respectively were connected in series. A steady current of 1.50 amp was passed through them until 1.45g of silver were deposited at the cathode of cell B. HOw long did the current flow?