NEET UG CHEMISTRY MCQ: ELECTRO CHEMISTRY

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STATEMENT-1 : If

\left(\frac{d E_{\text {cell }}}{d T}\right)_p>0

for a cell reaction then

\Delta S

is positive.

STATEMENT-2 :

\Delta S=n F T\left(\frac{d E}{d T}\right)_p

View answer and explanation

Correct option: C

If STATEMENT-1 is TRUE and STATEMENT-2 is FALSE

Statement-1 is TRUE: If (dEcell/dT)_p > 0, then ΔS is positive because ΔG = -nFEcell and ΔG = ΔH - TΔS. Statement-2 is FALSE: The correct relation is ΔS = nF(dE/dT)_p.

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4.5 g of Al (at. mass 27 amu) is deposited at cathode from

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ions in solution by the same quantity of charge will be : The correct order of molar conductivity at infinite dilution of

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is A solution of copper sulphate

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is electrolysed for 10 minutes with a current of 1.5 amperes. The mass of copper deposited at the cathode (at. mass of Cu = 63 u) is The desired amount of charge for obtaining one mole of Al from

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is When an aqueous solution of lithium chloride is electrolysed using graphite electrodes : Which are used as secondary reference electrodes?