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

2018 · Q56
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. /IIT JAM
  3. /Chemistry
  4. /Electrochemistry
  5. /2018 · Q56

Electrochemistry question

2018 · Q56

IIT JAMChemistryElectrochemistryNumerical+2 / −0
The *emf* of a standard cadmium cell is 1.02 V at 300 K. The temperature coefficient of the cell is −5.0×10−5-5.0\times10^{-5}−5.0×10−5 V K −1^{-1}−1. The value of ΔH∘\Delta H^{\circ}ΔH∘ for the cell is ‾\underline{\hspace{2cm}}​ kJ mol −1^{-1}−1 (rounded up to two decimal places). [1 F = 96500 C mol −1^{-1}−1]
Numerical answer
View written solutionFree

Correct answer: -201.00, -198.00

PreviousNext

More from Electrochemistry

  • For a cell reaction, Pb(s)+Hg2​Cl2​(s)→PbCl2​(s)+2Hg(l), (∂T∂R0​)p​ is 1.45×10−4 VK−1. The entropy change (in J mol⁻¹ K⁻¹) for the reaction is [Given: 1 F =…2017 · Numerical
  • The standard reduction potentials of Ce⁴⁺/Ce³⁺ and Fe³⁺/Fe²⁺ are 1.44 and 0.77 V, respectively. The log₁₀K (K is the equilibrium constant) value for the following reaction is (final answer should be rounded off to two decimal places) Ce⁴⁺…2017 · Numerical
  • An electrochemical cell consists of two half-cell reactions AgCl(s) + e⁻ → Ag(s) + Cl⁻(aq) Cu(s) → Cu²⁺(aq) + 2e⁻ The mass of copper (in grams) dissolved on passing 0.5 A current for 1 hour is [Given: atomic mass of Cu is 63.6; F = 96500 C…2016 · MCQ
  • The concentration of K + ion inside a biological cell is 20 times higher than outside. The magnitude of potential difference between the two sides is [Given: 2.303 RT/F = 59 mV]2015 · MCQ
  • The standard reduction potentials of the Fe 3+/Fe 2+ and Fe 2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe 3+/Fe couple is ​2015 · Numerical
  • The molar conductivity of a 0.02 M weak acid HA is 3.2 mS m 2 mol −1 at 298 K. The p Ka​ of HA is ​. (round off to one decimal place) [Given: Limiting molar conductivity of HA = 39 mS m 2 mol −1…2025 · Numerical
  • A cell is constructed by Cl₂/Cl⁻(aq) and a standard hydrogen electrode half-cells. The standard potential of the complete cell is 1.38 V and (∂T∂E0​)P​=−1.24 mVK−1. The ΔSreaction0​…2025 · Numerical
  • In the cell reaction P+(aq)+Q(s)→P(s)+Q+(aq) the EMF of the cell, Ecell​ is zero. The standard EMF of the cell, Ecello​ is [Given: Activities of all solids are unity. Activity of P+(aq) is 2 M. Activity of…2024 · MCQ