Download App

Electrochemistry — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryElectrochemistry3 Marks
Question
A current of $1.50A $ was passed through an electrolytic cell containing $AgNO_3$ solution with inert electrodes. The weight of Ag deposited was $1.50g$. How long did the current flow?
✓

Answer

$\text{Ag}^++\text{e}^-\xrightarrow{ \ \ \ \ \ \ }\text{Ag}$
Quantity of charge required to deposit $108g$ of silver $= 96500C$
$\therefore$ Quantity of charge required to deposit $1.50g$ of silver $=\frac{96500}{108}\times1.50=1340.28\text{C}$
$\text{t}=\frac{\text{Q}}{\text{I}}$
$\therefore$ Time taken $=\frac{1340.28}{1.50}=893.52\text{s}$

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→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Name the reagents which are used in the following conversions:
i. A primary alcohol to an aldehyde
ii. Butan-2-one to butan-2-ol
iii. Phenol to 2, 4, 6-tribromophenol
→
What is a peptide bond or peptide chain? Elaborate on how protein compounds are formed from amino acid compounds.
→
Nitric oxide, $NO$, reacts with oxygen to produce nitrogen dioxide.
$\text{2NO(g)+O}_2(\text{g)}\rightarrow\text{2NO}_2\text{(g)}$
The rate law for this reaction is:
$\text{Rate = k}[\text{NO]}^2[\text{O]}_2$
Propose a machanism for the reaction.
→
How will you bring about the following conversions?
n-Propyl chloride to iso-propyl chloride.
→
$\text{E}^\ominus V$ of $Cu$ is $+ 0.34V$ while that of $Zn$ is $– 0.76V.$ Explain.
→
Write down the difference between $SN^1$ and $SN^2$ reaction.
→
  1. Draw the geometrical isomers of complex $\ce{[Pt(NH_3)_2Cl_2]}.$
  2. On the basis of crystal field theory, write the electronic configuration for $d^4$ ion if $\Delta_0< P.$
  3. Write the hybridization and magnetic behaviour of the complex $\ce{[Ni(CO)_4].}$
$($At. no. of $Ni = 28)$
→
Give structures of the products you would except when each of the following alcohols
$i.$ Butan$-1-ol$
$ii.\ 2-$Methylbutan$-2-ol$ react with
$a.\ HCI - ZnCl_2$
$b.\ HBr$ and
$c.\ SOCI_2$​​​​​​​
→
While separating a mixture of ortho and para nitrophenols by steam distillation, name the isomer which will be steam volatile. Give reason.
→
Calculate the half$-$life of a first order reaction from their rate constants given below:
  1. $\ce{200 s^{–1}}$
  2. $\ce{2 min^{–1}}$
  3. $\ce{4 years^{–1}}$
→