Chemistry questions
29404 published questions with worked solutions.
- According to Kohlrausch law for infinite dilution the molar conductance of the electrolyte is equal to _____
- The resistance of a 0.1 M solution of acetic acid is 250 ohm, when measured in a cell of cell constant 1.15 cm^ -1 . The molar...
- The unit of molar conductivity is _____.
- The molar conductances at infinite dilution of HCl and NaCl are respectively 426.15 and 126.15 ohm^ -1 ,cm^2 ,mol^ -1 . It can be...
- Kohlrausch law of independent migration of ions is applicable for _____
- It has been observed that gaseous hydrogen chloride is a very poor conductor of electricity but a solution of hydrogen chloride...
- Electrolytic conduction differs from metallic conduction. In case of electrolytic conduction _____
- Which of the following reactions CANNOT be used to set up the electrochemical cell?
- Which of the following is TRUE about electrochemical cell?
- In the electrolysis of water, one Faraday of electrical energy would evolve _____
- One Faraday of electricity will liberate half gram atom of the metal from a solution of _____
- The atomic mass of oxygen is 16, hence the electrochemical equivalent (ECE) of oxygen in kg per Coulomb is _____
- How many hours are required for a current of 3 A to decompose electrolytically one mole of water?
- An industry produced 40 kg of calcium in two hours by electrolysis. How much of aluminium will be produced by the same current in...
- When 48250 C of electricity is passed through an aqueous solution of NiI_2 (atomic mass of Ni = 58.8), the mass of nickel metal...
- Cell – I containing a solution of mercuric perchlorate Hg(ClO_4)_2 , Cell – II containing a solution of mercuric nitrate...
- If the atomic mass of M is x, the electrochemical equivalent of M in the solution of M_2(SO_4)_3 will be _____
- What will be the current required to deposit on the cathode 39.4 g gold/hour from a solution containing a salt of gold (III)?...
- Mass of copper deposited by the passage of 2 A of current for 965 s through a 2 M solution of CuSO_4 is (At. Mass of Cu = 63.5)...
- During electrolysis, the species discharged at cathode are _____