MHT CET 2023 14th May Morning Shift | Electrochemistry Question 3 | Chemistry

Which from following expressions is used to find the cell potential of $$\mathrm{Cd}_{(\mathrm{s})}\left|\mathrm{Cd}_{(\mathrm{aq})}^{++}\right|\left|\mathrm{Cu}_{(\mathrm{aq})}^{+}\right| \mathrm{Cu}_{(\mathrm{s})}$$ cell at $$25^{\circ} \mathrm{C}$$ ?

$$\mathrm{E}_{\text {cell }}=\mathrm{E}_{\text {cell }}^o-0.0296 \log \frac{\left[\mathrm{Cd}^{++}\right]}{\left[\mathrm{Cu}^{++}\right]}$$

$$\mathrm{E}_{\text {cell }}=\mathrm{E}_{\text {cell }}^o+0.0296 \log \frac{\left[\mathrm{Cd}^{++}\right]}{\left[\mathrm{Cu}^{++}\right]}$$

$$\mathrm{E}_{\text {cell }}=\mathrm{E}_{\text {cell }}^o-0.0592 \log \frac{\left[\mathrm{Cu}^{++}\right]}{\left[\mathrm{Cd}^{++}\right]}$$

$$\mathrm{E}_{\text {cell }}=\mathrm{E}_{\text {cell }}^{\circ}+0.0592 \log \frac{\left[\mathrm{Cu}^{++}\right]}{\left[\mathrm{Cd}^{++}\right]}$$

MHT CET 2023 14th May Morning Shift

MCQ (Single Correct Answer)

-0

Which from following is NOT true about voltaic cell?

The anode acts as negative electrode.

The cathode acts as a positive electrode.

It converts electrical energy into chemical energy

Dry cell is an example of voltaic cell.

MHT CET 2023 14th May Morning Shift

MCQ (Single Correct Answer)

-0

Calculate molar conductivity of $$\mathrm{NH}_4 \mathrm{OH}$$ at infinite dilution if molar conductivities of $$\mathrm{Ba}(\mathrm{OH})_2$$ $$\mathrm{BaCl}_2$$ and $$\mathrm{NH}_4 \mathrm{Cl}$$ at infinite dilution are $$520,280,129 \Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$ respectively.

$$249.0 ~\Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$

$$498.0 ~\Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$

$$125.0 ~\Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$

$$369.0 ~\Omega^{-1} \mathrm{~cm}^2 \mathrm{~mol}^{-1}$$

MHT CET 2023 13th May Evening Shift

MCQ (Single Correct Answer)

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Which from the following expression represents molar conductivity of an electrolyte $$\mathrm{A}_2 B_3$$ type?

$$2 \lambda_{A^{+++}}^0+3 \lambda_{B^{--}}^0$$

$$3 \lambda_{A^{+++}}^0+2 \lambda_{B^{--}}^0$$

$$2 \lambda_{A^{+++}}^{\circ}+\lambda_{B^{--}}^{\circ}$$

$$\lambda_{A^{+++}}^{\circ}+3 \lambda_{B^{--}}^{\circ}$$

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