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 $CuSO_4$ 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

Why is an external emf of more than $2.2V$ required for the extraction of $Cl_2$ from brine?
→
Explain why free radical polymerisation of styrene gives a product in which phenyl groups are on alternate carbon atoms rather than on adjacent carbon atoms.
→
Explain the following items:
Biocatalysts.
→
How will you bring about the following conversions?
Iso-propyl chloride to n-propyl chloride.
→
How much electricity will be required to obtain 1.5 gram on copper in 3 hours in an electrolytic cell of aqueous solution of copper sulphate? (Atomic mass of Cu = 63.5 )
→
Write the Nernst equation and emf of the following cells at $298\ K:$
$Pt(s) | Br_2(l) | Br^– (0.010 M) || H^+ (0.030 M) | H_2(g) (1 bar)|Pt(s).$
→
Write the mechanism of acid dehydration of ethanol to yield ethane.
→
Although thermodynamically feasible, in practice, magnesium metal is not used for the reduction of alumina in the metallurgy of aluminium. Why?
→
  1. Out of $(CH_3)_3C–Br$ and $(CH_3)_3C–I$, which one is more reactive towards $S_N{}^1$ and why?
  2. Write the product formed when p-nitrochlorobenzene is heated with aqueous NaOH at 443K followed by acidification.
  3. Why dextro and laevo–rotatory isomers of Butan-2-ol are difficult to separate by fractional distillation?
→
How does a solid catalyst enhance the rate of combination of gaseous molecules?
→