Download App

Electrochemistry — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryElectrochemistry2 Marks
Question
Using the standard electrode potentials given in Table $3.1,$ predict if the reaction between the following is feasible$: Ag(s)$ and $Fe^{3+} (aq)$
✓

Answer

$\ \ \ \text{Ag}_\text{(s)}\ \ \ \ \ \ \ \ \ \xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ \ } \text{Ag}^{+}_\text{(aq)}+\text{e}^- \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ;\ \ \ \ \ \ \ \ \ \ \ \ \text{E}^\circ=+0.80\ \text{V}$
$\text{Fe}^{3+}_\text{(aq)}+\text{e}^-\ \ \ \ \ \ \xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ \ } \text{Fe}^{2+}_{\text{(aq)}}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ;\ \ \ \ \ \ \ \ \ \ \ \text{E}^\circ=+0.77\ \text{V}$
$\overline{\text{Ag}_\text{(s)}+\text{Fe}^{3+}_\text{(aq)}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ \ }\text{Ag}^{+}_\text{(aq)}+\text{Fe}^{2+}_\text{(aq)} \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ;\ \ \ \ \ \ \ \ \ \ \ \ \text{E}^\circ=-0.03\ \text{V}}$
Since $E^\circ E$ for the overall reaction is negative, the reaction between $Ag(s)$ and $Fe^{3+} (aq)$ is not feasible.

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 "2 Marks Questions" 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

HI is stronger acid than HF. Explain.
→
What is lanthanoid contraction? What are the consequences of lanthanoid contraction?
→
Answer the following.
  1. What type of linkage is responsible for the primary structure of proteins?
  2. Name the location where protein synthesis occurs in our body.
→
What are nucleic acids? Mention their two important functions.
→
(i) $Ce ^{+4}$ is a strong oxidant, why?
(ii) $Eu ^{2+}$ is a strong reducing agent, why?
→
Explain peroxide effect.
→
What is ionic conductivity? It depends on which factor?
→
Describe the biological functions of nucleic acid compounds.
→
What are glycogens? How it is different from starch?
→
Using IUPAC norms write the formulae of the following:
(a) Tetrahydroxozincate(II)
(b) Potassium tetrachloridopadauate(II)
(c) Diaminedichloridoplatinum(II)
(d) Hexaammineplatinum (IV)
(e) Potassium tetracyanonickelate(II)
(f) Tetrabromidocuprate(II)
(g) Pentaamminenitrito-o-cobalt(III)
(h) Pentaamminenitrito-N-cobalt (III)
→