Electrochemistry MCQs for NEET — Chemistry Questions with Answers

If concentration of the $ Cu ^{2+} _{(aq)} is made double then what change is observed in the E ^ 0 _cell Cu_{(s)} + 2Ag^{2+}_{(äq)} \rightleftharpoons Cu^{2+}_{(aq)}+ 2Ag_{(s)} E ^\circ = 0.48 Volt $ for the reaction

What is the value of $ \triangle H for the reaction 4H_{2(g)} + 2 O_{2(g)}\rightleftharpoons 4 H_2 O _{(l)} \triangle H taking place in H_2 fuelcell $ ?

Which catalyst are used in fuel cell at anode and cathode respectively?

What changes takes place in the $E ^\circ _{cell} $ , of electrochemical cell if cell reactions are taking place at electrodes are multiplied by n?

Group-l cell and in group 2 potentials are given then match the correct options group-1 (i) Laclanche cell (ii) Lead storage cell (iii) Mercury cell (iv) Fuel cell group-2 (A) 1.23 V (B) 2.35 V (C.)1.53 V (D) 2.0 V (.E) 1.32 V (F) 1.35 V (G) 1.75 V (H) 1.5 V

According to authentic symbol system $ { l \over AR } $

Which subsance is present as electrolyte in mercury cell?

Select correct option for the given statements (where T true and F— false ) (i) by conductance of electricity tcnvcrature of metal increases and no changes are observed in the solution of electrolyte (ii) by conductance of electricity metal experience chemical reaction and changes are observed in the solution of electrolyte. (iii) by conductance Of electricity no changes are observed in metal and solution Of electrolyte (iv) by conductance of temperature of metal increases and changes are observed in the solution of electrolyte

Dissociation constant of one weak electrolyte is $ 1.77 \times 10^{-5} . If it’s A^\circ_m 390.5 S.cm^2.mol^{-1} then what is the molar conductance of its 0.01M aqueous solution?

Which metals are used as sacrifical anode to stop the corrosion of the iron in steamer'?