Download App

Electrochemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryElectrochemistry5 Marks
Question
Explain relationship between $E _{\text {cell }}^{\circ}$ and equilibrium constant with the help of Nernst equation.
✓

Answer

self

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "5 Marks Questions" from Electrochemistry→Electrochemistry — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

  1. Complete the following chemical reaction equations:
  1. $P_4 + SO_2Cl_2 \rightarrow $
  2. $XeF_6 + H_2O \rightarrow $
  1. Predict the shape and the asked angle ($90o$ or more or less) in each of the following cases:
  1. $SO^{2–}_3$ and the angle $O–S–O$.
  2. $ClF_3$ and the angle $F–Cl–F$.
  3. $XeF_2​​​​​​​$​​​​​​​ and the angle $F–Xe–F$.
→
The experimental data for decomposition of $N_2O_5$
$[2N_2O_5 \rightarrow 4NO_2 + O_2]$
in gas phase at 318K are given below:
$t/s$ $0$ $400$ $800$ $1200$ $1600$ $2000$ $2400$ $2800$ $3200$
$10^2 \times [N_2O_5]/mol L^{-1}$ $1.63$ $1.36$ $1.14$ $0.93$ $0.78$ $0.64$ $0.53$ $0.43$ $0.35$
  1. Plot $[N_2O_5]$ against $t.$
  2. Find the half-life period for the reaction.
  3. Draw a graph between $ \log[N_2O_5]$ and $t.$
  4. What is the rate law?
  5. Calculate the rate constant.
  6. Calculate the half-life period from k and compare it with $(ii).$
→
An organic compound $A$ with molecular formula $C_7H_7NO$ reacts with $Br_2/aq.$ $KOH$ to give compound $B,$ which upon reaction with $NaNO_2$ and $HCl$ at $0^\circ C$ gives $C.$ Compound $C$ on heating with $CH_3CH_2OH$ gives a hydrocarbon $D.$ Compound $B$ on further reaction with $Br_2$ water gives white precipitate of compound $E.$ Identify the compound $A, B, C, D$ and $E;$ also justify your answer by giving relevant chemical equations.
→
Explain the collision principle of any chemical reaction.
→
Chromium crystallises in bcc structure. If its atomic diameter is $245\ pm$, find its density. Atomic mass of $Cr = 52$ amu and $N_A = 6.02 \times 10^{23}\ mol^{–1}.$
→
$P_4O_6$ reacts with water according to equation $P_4O_6 + 6H_2O \rightarrow 4H_3PO_3$​​​​​​​. Calculate the volume of $0.1M$ $NaOH$ solution required to neutralise the acid formed by dissolving $1.1\ g$ of $P_4O_6$​​​​​​​ in $H_2​​​​​​​O$.
→
Primary alkyl halide C4H9Br (a) reacted with alcoholic KOH to give compound (b). Compound (b) is reacted with HBr to give (c) which is an isomer of (a). When (a) is reacted with sodium metal it gives compound (d), C8H18 which is different from the compound formed when n-butyl bromide is reacted with sodium. Give the structural formula of (a) and write the equations for all the reactions.
→
(a) What is van't Hoff factor? Explain.
(b) Write the equation of molecular number properties including van't Hoff factor.
→
Match the statement given in Column I with the phenomenon given in Column II.
  Column I   Column II
(i) Dispersion medium moves in an electric field. (a) Osmosis.
(ii) Solvent molecules pass through semi permeable membrane towards solvent side. (b) Electrophoresis.
(iii) Movement of charged colloidal particles under the influence of applied electric potential towards oppositely charged electrodes. (c) Electroosmosis.
(iv) Solvent molecules pass through semi permeable membranes towards solution side. (d) Reverse osmosis.
→
Answer the following questions:
Write balanced equations to represent what happens when.
  1. $Cu^{2+}$​​​​​​​ is treated with KI.
  2. Acidified potassium dichromate solution is reacted with iron (II) solution. (ionic equation).
→