Download App

Electrochemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryElectrochemistry3 Marks
Question
Calculate the electrode potential of copper electrode dipped in 0.1M CuSO4 solution at 298K. Given that $\text{E}^{\circ}_{\text{cu}^{2}+/\text{cu}}=0.34\text{V}.$
✓

Answer

$\text{Cu}^{2+}+2\text{e}^-\xrightarrow{ \ \ \ \ \ \ }\text{Cu};\text{n}=2$
$\text{E}_{\text{Cu}^{2+}/\text{Cu}}=\text{E}^{\circ}_{\text{Cu}^{2+}/\text{Cu}}-\frac{0.059}{\text{n}}\log\frac{1}{[\text{Cu}^{2+}]}$
$\text{E}_{\text{Cu}^{2+}/\text{Cu}}=0.34-\frac{0.059}{2}\log\frac{1}{0.1}$
$\text{E}_{\text{Cu}^{2+}/\text{Cu}}=0.34-0.0295=0.3105\text{V}$

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 "3 Marks Question" 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

Complte the following reaction :
C6H5 COOH + SOCI2 →
→
Vapour pressure of water at 20oC is 17.5 mm Hg. Calculate the vapour pressure of water at 20 oC when 15 g of glucose (Molar mass =180 g mol-1) is dissolved in 150 g of water.
→
Give reasons:
  1. C–Cl bond length in chlorobenzene is shorter than C–Cl bond length in CH3–Cl.
  2. The dipole moment of chlorobenzene is lower than that of cyclohexyl chloride.
  3. SN1 reactions are accompanied by racemization in optically active alkyl halides.
→
What are alcohol, phenol and ether compounds ?
→
Answer the following questions:
Compare non transition and transition elements on the basis of their.
  1. Variability of oxidation states.
  2. Stability of oxidation states.
→
An antifreeze solution is prepared from 222.6g of ethylene glycol (C2H4(OH)2) and 200g of water. Calculate the molality of the solution. If the density of this solution be 1.072g mL-1, what will be the molarity of the solution?
→
Explain the bromination of Aniline. State what is done if Mono substituted derivative of aniline is to be formed by this process.
→
Complte the following reaction :
$CH _3 COOH \frac{\text { (i) } X _2 R e d P }{\text { (iii) } H _2 O }$
→
$^{238}_{92}\text{U}$ Change to $^{206}_{92}\text{Pb}$ by successive radioactive decay. A sample of urenium ore was anlaysed and found to contain 1.0 g of $^{238}\text{U}$ and 0.1 g of $^{206}\text{Pb}$ had accumulated due to decay of $^{238}\text{U}$, find out the age of ore. (Half- life of $^{238}\text{U}$$= 4.5\times10^9$ years).
→
Giving an example for each describe the following reactions:
  1. Hofmann’s bromamide reaction.
  2. Gatterman reaction.
  3. A coupling reaction.
→