Chemistry questions
29404 published questions with worked solutions.
- How much quantity of electricity is required to liberated 1 g equivalent weight of an element?
- An electrolytic cell contains a solution of AgNO_3 and Pt electrodes. A current is passed until 1.6 gm of O_2 has been liberated...
- On passing 9.65 amperes of electricity for 1000 seconds, 2.0 grams of metal deposits. The chemical equivalent of metal is
- 1 mole of electrons is passed through three electrolytic cells in series, first containing silver ions, the second zinc ions and...
- 2 F of electricity will liberated 1 gram atom of the metal from the solution of
- On passing an electricity current, the quantity of a metal deposited on cathode depends upon
- An electric current when passed through two dilute sulphuric acid for 2 hours liberated 0.50 g of hydrogen. What weight of copper...
- A chemist wants to produce Cl_2 (g) from molten NaCl. How many grams could be produced if he uses a steady current of 1 amp for...
- What weight of copper will be deposited by passing 2 Faraday of electricity through a solution of copper sulphate?
- The ece of hydrogen is 0.0000104 and eq. wt. of oxygen is 8, ece of oxygen is
- The time required to coat a metal surface of 80 cm^2 with 5 10^ -3 cm thick layer of silver [density 1.05 gm / cm^3 ] with...
- Four Faraday of electricity is passed through solution of Ferrous sulphate. The mass of iron (At. wt. 56) deposited at cathode in...
- To obtain 2.70 g of silver (at. mass 108) from an aqueous solution of AgNO_3 it is required to pass
- The charge of an electron is 1.60219 10^ -19 coulombs. What is the value of faraday constant?
- One faraday is equal to
- The charge required for the conversion of Cr_2O_7^ 2- ions to Cr^ 3+ is
- A silver cup is plated with silver by passing 0.001 F of electricity. The amount of Ag deposited is (Ag = 107.8)
- How many coulombs are required to liberate 1.12 m^3 of hydrogen at S.T.P. during electrolysis?
- Which of the following statements is correct for galvanic cell written in an abbreviated form?
- A cell in which electric current is produced by an oxidation, reduction is called a