Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Electrochemistry question

2014 · Q92
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Chemistry
  4. /Electrochemistry
  5. /2014 · Q92

Electrochemistry question

2014 · Q92

NEETChemistryElectrochemistryMCQ+4 / −1
The weight of silver (at. wt. = 108) displaced by a quantity of electricity which displaces 5600 mL of O2 at STP will be
  1. A
    5.4 g
  2. B
    10.8 g
  3. C
    54.0 g
  4. D
    108.0 g
View written solutionFree

Correct answer: D

We know, from Faraday’s second law

WAgEAg=WO2EO2{{{W_{Ag}}} \over {{E_{Ag}}}} = {{{W_{{O_2}}}} \over {{E_{{O_2}}}}}EAg​WAg​​=EO2​​WO2​​​

⇒\Rightarrow⇒ WAg108=560022400×328{{{W_{Ag}}} \over {108}} = {{{{5600} \over {22400}} \times 32} \over 8}108WAg​​=8224005600​×32​

⇒\Rightarrow⇒ WAg108=88{{{W_{Ag}}} \over {108}} = {8 \over 8}108WAg​​=88​

⇒\Rightarrow⇒ WAg=108{{W_{Ag}} = 108}WAg​=108 g

PreviousNext

More from Electrochemistry

  • When 0.1 mol MnO42−​ is oxidised the quantity of electricity required to completely oxidise MnO42−​ to MnO4−​ is2014 · MCQ
  • Consider the half-cell reduction reaction Mn2+ + 2e− → Mn, Eo = −1.18 V Mn2+ → Mn3+ + e−, Eo = − 1.51 V The Eo for the reaction 3 Mn2+ → Mno + 2Mn3+, and possibility of the forward reaction are respectively2013 · MCQ
  • How many gram of cobalt metal will be deposited when a solution of cobalt (II) chloride is electrolyzed with a current of 10 amperes for 109 minutes (1 Faraday = 96,500 C; Atomic mass of Co = 59 u)2013 · MCQ
  • At 25oC molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 ohm−1 cm2 mol−1 and at infinite dilution its molar conductance is 238 ohm−1 cm2 mol−1. The degree of ionisation of ammonium hydroxide at the same…2013 · MCQ
  • A button cell used in watches function as following. Zn(s) + Ag2O(s) + H2O(l) ⇌ 2Ag(s) + Zn2+(aq) + 2OH−(aq) If half cell potentials are Zn2+(aq) + 2e− → Zn(s); Eo = −0.76 V Ag2O(s) + H2O(l) + 2e− →…2013 · MCQ
  • A hydrogen gas electrode is made by dipping platinum wire in a solution of HCl of pH = 10 and by passing hydrogen gas around the platinum wire at one atm pressure. The oxidation potential of electrode would be2013 · MCQ
  • Molar conductivities (Λmo​) at infinite dilution of NaCl, Hcl and CH3COONa are 126.4, 425.9 and 91.0 S cm2 mol−1 respectively. (Λmo​) for CH3COOH will be2012 · MCQ
  • The Gibb's energy for the decomposition of Al2O3 at 500oC is as follows 32​ Al2O3 → 34​ Al + O2 ΔrG = +960 kJ mol−1 The potential difference needed for the electrolytic reduction of aluminium oxide…2012 · MCQ