For cell reaction will be spontaneous if:
Equivalent conductance of saturated BaSO_{4} is 400 ohm^{1}cm^{2} equivalemt^{1} and specific conductance is 8 x 10^{5} ohm^{1}cm^{1}. Hence, k_{sp} of BaSO_{4} is:
For a cell reaction, E (at 25^{o}C) = 1.26V, n = 2 and ΔS = 96.5JK^{1}mol^{1}. E at 85^{o}C by assuming ΔS to be independent of temperature is _____ (V). [Given F = 96500 Cmol^{1}] (Round off to two decimal places).
Given for the reaciton, for which ΔH^{o} = 3.0 kcal. The molar entropies are 6.5 cal/K for M, 22.2 cal/K for M^{+3}, 31.2 cal/k for H_{2} and 10.0cal/K for H^{+}.
The value of E^{o} for the half cell, is ______[Round off to two decimal places]
The resistance of decinormal solution of a salt occupying a volume between two platinum electrodes 1.80 cm apart and 5.4 cm^{2} area was found to be 32 ohm. The value of is
The value of
Given :
The required electrode reaction is
A current of 0.5A is passed through molten AlCl_{3} for 40 min. The mass of the aluminum deposited at the cathode is (Al = 27)
At 18^{0}C the mobilities of NH^{+}_{4} and ClO^{}_{4} ions are 6.6 x 10^{4} and 5.7 x 10^{4} cm^{2} volt^{1}s^{1} at infinite dilution. The value of equivalent conductance of ammonium perchlorate solution at infinite dilution
For the reaction,
H_{2}(g)(1atm) + 2AgCL(s) = 2Ag(s) + 2H^{+}(aq)(0.1M)+2Cl^{}(aq)(0.1M)
The emf of the cell is _____volt.(Round off to two decimal placs)
The variation of equivalent conductance of strong electrolyte with is correctly shown in the figure
With dilution λ_{eq }increases in a straight line for strong electrolyte.
According to Debye Huckel limiting law the mean activity coefficient of 0.5 x 10^{4} mol / kg CaCl_{2} is at 25^{o}C
Given that, E_{0}(Fe^{3+},Fe) = 0.04V and E_{0}(Fe^{2+},Fe) = 0.44V, the value of E_{0}(Fe^{3+},Fe^{2+}) is _______ (in V). (round off to two decimal places).
The solubility product of AgBr(s) is 5 x 10^{13 }at 298k. If the standard reduction potential of the half cell The standard reduction potential (in volts) is _____ (round off to two decimal places).
The concentration of a MgSO_{4} solution having the same ionic strength as that of a 0.1M Na_{2}SO_{4} solution is ____(Round off to three decimal places)
The temperature coefficient of the cell is Choose the incorrect statement(S)
= 0 then ΔH > nFE endothermic reaction (Wrong relation)
The standard electrode potential E^{o} at a fixed temperature and in a given medium is dependent on
Depend only electrode reaction and electrode composition
At 273K, the calorimetric determination of ΔH for the reaction,
Zn(s) + 2AgCl(s) → ZnCl_{2}(aq) + Ag(s)
yielded 217.78 kJ mol^{1}, while the emf of the corresponding cell was 1.015 V. The of the cell is
The Zn^{2+}Zn half cell (E^{θ} = 0.762V) is connected to a Cu^{2+}  Cu halff cell (E^{o} = 0.340V). The value of log_{10}K, where K is the equilibrium constant is [Given : (2.303 RT/F) = 0.06]
An electrochemical cell consists of two halfcell reactions
The mass of copper (in grams) dissolved on passing 0.5 A current for 1 hour is
[Given: atoms mass of Cu is 63.6; F = 96500C mol^{1}]
According to the DubyeHuckel limiting law, if the concendration of the dilute aqueous solution of KCI is increased 4fold, the value of log is the molal mean ionic activity coefficient) will be








