The number of Faradays(F) required to produced 20 g of calcium from molten CaCl₂ is (Atomic mass of Ca = 40 g/mol)

For the cell reaction :-

2Fe³⁺_(aq) + 2I^-_(aq) → 2Fe²⁺_(aq) + I₂ E⁰_cell = 0.24 V at 298K.

The standard Gibbs energy(ΔrG0) of the cell reaction is [F= 96500 C/mol]

The molar conductivities are given as

λ⁰_m(H₂SO₄) = x S cm² mol^-1

λ⁰_m(K₂SO₄) = y S cm² mol^-1

λ⁰_m(CH₃COOK) = z S cm² mol^-1

^{Molar conductance of} λ⁰_m(CH₃COOH) = ? S cm² mol^-1

The standard electrode potential of E⁰ (Mⁿ⁺/ M), values of Al³⁺/Al, Ag⁺/ Ag, K⁺/ K and Cr³⁺/Cr are -1.66V, 0.80V, -2.93V and -0.74V respectively. The correct decreasing order of reducing power of the metal is

In the electrochemical cell :

Zn | ZnSO₄(0.01M) || CuSO₄(1.0M) |Cu. The emf of this Daniel cell is E₁. when the concentration of ZnSO₄ is changed to 1.0 M and that of CuSO₄ changed to 0.01M, the emf of the cell changes to E₂. From the followings, which one is the relationship between E₁and E₂ ? (RT/F = 0.059)

The molar conductivity of a 0.5 mol/dm³ solution of AgNO3 with specific conductance of 5.76 x 10^-3 S cm^-1 at 298 K is

During electrolysis of molten NaCl, the time required to produce 0.10 mol of chloride gas using a current of 3 ampere is

If the E⁰_cell for a given reaction has a negative value, which of the following gives the correct relationship for the values of ΔG⁰ ?

Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because

The weight of silver(At.wt= 108) displaced by a quantity of electricity which displaces 5600 mL of O₂ at STP will be

At 25⁰ C molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 ohm^-1cm²mol^-1 and at infinite dilution its molar conductance is 238 ohm^-1cm²mol^-1. The degree of ionization of ammonium hydroxide at the same concentration and temperature is