Last seen: Jan 13, 2022
Due to low reduction potential, Na+ ions are not reduced at cathode. Instead, H+ are reduced and H2 is obtained.
2Al + 3Cu2+ → 2Al3+ + 3Cu
2Fe + O2 + 4H+ → 2Fe2+ + 2H2O
NH4Cl is acidic in nature. It corrodes zinc container.
A > D > B > C
The Debye-Huckel-Onsagar equation = Ʌcm = Ʌ°m - A√C
The relation between conductance and conductivity = Ʌcm = k/C
Temperature increases, electrical conductance increases.
Temperature increases, electrical conductance decreases.
Emf of a cell depends on following factors : (a) Nature of reactants (b) Concentration of solution in two half cells (c) Temperature
Because the half cell containing single electrode cannot exist independently, as charge cannot ow on its own in a single electrode.
Molar conductivity of an electrolyte increases with increase of temperature.
we know that, Q = I x t Given, I = 5.0 A t = 30 minutes = 30 x 60 = 1800 s ∴ Q = 5 x 1800 = 9000 C Also, Ni2+(aq) + 2e- →Ni(s) 2 x 96500 ...
The OH- ions from the alkalies react with H+ ions, and form unionized water. Since ions take part in the process of rusting, the removal of these ions...
Cu2+(aq) + 2e- → Cu 2 x 96500 C deposit 1 mole of Cu ∴ 24125 C will deposit 1/ 2 x 96500 x 24125 = 0.125 mole of Cu
Rusting will occur faster if coating of ‘C’ is damaged as ‘C’ has a lower tendency to undergo oxidation as compared to Fe (based on the values of the ...
The process of slowly eating away of the metal due to the attack of atmosphere gases on the surface of the metal resulting into the formation of oxide...
Fuel cells are those cells in which the energy produced from the combustion of fuels such as H2, CO, CH4 etc. is directly converted into electrical en...
(c) Assertion is correct but Reason is wrong. Explanation: Conductance of semiconductors lies between metals and insulators, i.e., in the range of...
(b) Assertion and Reason both are correct statements but Reason is not the correct explanation for Assertion. Explanation: In fee unit cell, there...