Question
Using the standard electrode potentials given in Table 3.1, predict if the reaction between the following is feasible:
Fe3+ (aq) and Br– (aq)
Fe3+ (aq) and Br– (aq)
✓
Answer
$\text{Fe}^{3+}_\text{(aq)}+\text{e}^-\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ \ } \text{Fe}^{2+}_\text{(aq)}\Big]\times2\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ;\ \ \ \ \ \ \ \ \ \ \ \ \text{E}^\circ=+0.77\ \text{V}\\2\text{Br}^-_\text{(aq)}\ \ \ \ \ \ \xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ \ } \text{Br}_{2\text{(I)}}+2\text{e}^-\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ;\ \ \ \ \ \ \ \ \ \ \ \text{E}^\circ=-1.09\ \text{V}\\\overline{2\text{Fe}^{3+}_\text{(aq)}+2\text{Br}^-_\text{(aq)}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ \ }2\text{Fe}^{2+}_\text{(aq)}\ \text{and}\ \text{Br}_{2\text{(I)}} \ \ \ \ \ ;\ \ \ \ \ \ \ \ \ \ \ \text{E}^\circ=-0.32\ \text{V}}$
Since E° for the overall reaction is negative, the reaction between Fe3+ (aq) and Br− (aq) is not feasible.
Since E° for the overall reaction is negative, the reaction between Fe3+ (aq) and Br− (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.
Explore more
Similar questions
Compare the chemistry of the actinoid with that of lanthanoids with reference to:
Electronic configuration:
For which type of reactions, order and molecularity have the same value?
What are zwitter ions?
Write a note on the reaction of alcohols with phosphrous trihalides.
Write the reagents used in the following reactions:
→- $\text{C}_{6}\text{H}_{5}-\text{CO}-\text{CH}_{3}\xrightarrow{\text{ }\ \ \ \ \ \ {?}\ \\ \ \ \ \ \ }\text{C}_{6}\text{H}_{5}-\text{CH}_{2}-\text{CH}_{3}$
- $\text{CH}_{3}-\text{COOH}\xrightarrow{\text{ }\ \ \ \ \ \ {?}\ \\ \ \ \ \ \ }\text{CH}_{3}-\text{COCl}$
Write structures of main compounds A and B in each of the following reactions:
→- $\text{CH}_3\text{CH}_2\text{CH}\xrightarrow{\ \ \ {\text{CH}_3\text{MgBr/H}_3\text{O}^+}\ \ \ \ }\text{A}\xrightarrow{\ \ {\text{LiAlH}_4}\ \ }\text{B}$
Explain the limitations of Raoult's law.
Explain reverse osmosis for purification of water.
Why is the C-O-H bond angle in alcohols slightly less than the tetrahedral angle whereas the C-O-C bond angle in ether is slightly greater?
How carboxylic acid is obtained from the hydrolysis of acyl chloride and acid anhydride? Give examples.