Electrochemistry MCQs for NEET — Chemistry Questions with Answers

Which of the following cell representation is in correct with reference to cell reaction taking place in the cell at $ 25 ^\circ C ? (E ^\circ _{{Pb}^{2 +} |Pb} = − 0.13 V. , E ^\circ _{ Sn^{2+}|Sn}= − 0.14 V.) $

A2+ | A, B2+| B, C2+ | D is increasing order of std. reduction potential then choose correct option for the given state ments. (T = true and F = false ) (i) rod of metal A dissolve in the solution of metal $ B^{2+} $ (ii) solution of $ A^{2+} $ ion can not be filled in the container of the metal C. (iii) reaction $ D_{(s)} + B^{2+} _{(aq1.0M)} \rightleftharpoons D^{2+} _{( aq 0.1 M)} + B_{(s)} $ spontaneously in forward direction. (iv) atoms of metal C can not displace $ B^{2+} $ ioin from its solution.

What is the value of $ E_{Mg | Mg ^{2+} _{(0.5 M)}} at 25 ^\circ C ? ( E^ \circ _{Mg|Mg ^{ 2+} = 2.36 V. ) $

If potential of the cell formed by connecting half cell Ag | Ag+ and Al | Al3+ is 2.546V then what is the std. cell potential of the cell at 250C?

For cell $ Mg | Mg^{2+} _{(0.005M)} â•‘ Ag^+_{0.04M} | Ag $ which of the following option is correct for the value of Q related to n ?

For the cell $ Co | Co^ {2+} _{(0.04M)} | Cl^-_{(0.1M)}| Cl_{2(g,1.0 bar)}| Pt $ which of the following option is correct for the value of Q related to the value of n? (a) n = 1 (b) n = 2 (c) n = 3 (d) n = 4 (1) $ Q = 4.0 \times 10 ^ {-4} M^3 $ (2) $ Q = 8 M ^ {-3/2} $ (3) $ Q = 8.0 \times 10 ^ {-6} M ^ {9/2} $ (4) $ Q = 2 M ^ {-1/2} $ (5) $ Q = 4 M^{-1} $ (6) $ Q = 1.6 × 10^{-7} M^6 $ (7) $ Q = 0.002 M ^ {3/2} $ (8) $ Q = 16 M ^ {-2} $

For the cell $ Pt | Br_{2(g,1.0 bar)} | Br ^ - _{(0.5M)} || Au ^{3+}_{(0.4M)} | Au value of Q = 20M^{-4} $ then what is the appropriate value of n?

If temperature of the cell $ Mg | Mg^{2+}_{(0.005M)} || Ag^+_{(0.04M)} | Ag $ increases then what changes observed in the cell potential of the cell?

If temperature of the cell $ Ni | Ni^{2+} _{0.05M} || Cu^{2+}_{(0.08M)} | Cu $ increases then what changes observed (0.05 M) in the cell potential of the cell?

If temperature of the cell $ Fe | Fe^{2+}_{(xM)} || Cu^{2+} _{(0.08M)} | Cu $ decreases then theoritically cell potential of the cell increases then which value of x is possible?