Question
Which reference electrode is used to measure the electrode potential of other electrodes?
✓
Answer
Standard hydrogen electrode is the reference electrode whose electrode potential is taken to be zero. The electrode potential of other electrodes is measured with respect to it.
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For a reaction
$2\text{H}_2\text{O}_2\frac{\text{I}^-}{\text{alkaline medium}}2\text{H}_2\text{O}+\text{O}_2$
the proposed mechanism is as given below:
→$2\text{H}_2\text{O}_2\frac{\text{I}^-}{\text{alkaline medium}}2\text{H}_2\text{O}+\text{O}_2$
the proposed mechanism is as given below:
- $\text{H}_2\text{O}_2+\text{I}^{-}\xrightarrow{\ \ \ \ \ \ \ }\text{H}_2\text{O}+\text{IO}^{-}(\text{slow})$
- $\text{H}_2\text{O}_2+\text{IO}^{-}\xrightarrow{\ \ \ \ \ \ \ }\text{H}_2\text{O}+\text{I}^{-}+\text{O}_2(\text{fast})$
- Write rate law for the reaction.
- Write the overall order of reaction.
- Out of steps (1) and (2), which one is rate determining step?
Predict the products of electrolysis in each of the following:
An aqueous solution of AgNO3 with platinum electrodes.
An aqueous solution of AgNO3 with platinum electrodes.
Give the structure of A, B and C in the following reaction:
$\text{CH}_3\text{CH}_2\text{I}\xrightarrow[]{\text{NaCN}}\text{A}\xrightarrow[\text{Partial hydolysis}]{\text{OH}^+}\text{B}\xrightarrow[]{\text{NaOH}+\text{Br}_2}\text{C}$
→$\text{CH}_3\text{CH}_2\text{I}\xrightarrow[]{\text{NaCN}}\text{A}\xrightarrow[\text{Partial hydolysis}]{\text{OH}^+}\text{B}\xrightarrow[]{\text{NaOH}+\text{Br}_2}\text{C}$
Using the standard electrode potentials given in Table 3.1, predict if the reaction between the following is feasible:
Ag(s) and Fe3+ (aq)
Ag(s) and Fe3+ (aq)
What are reduction potential and oxidation potential?
Write Nernst equation for the following cell.
$N i (s)\left| N i ^{2+}(a q)\right|\left| A g ^{+}(a q)\right| A g _{(s)}$
→$N i (s)\left| N i ^{2+}(a q)\right|\left| A g ^{+}(a q)\right| A g _{(s)}$
Explain inversion, retention and racemisation.
Write the structures of compounds whose IUPAC name are as follows :
(i) $N , N$-dimethyl methanamine,
(ii) 2-Aminotoluene.
→(i) $N , N$-dimethyl methanamine,
(ii) 2-Aminotoluene.
Explain the preparation of aldehydes and ketones by ozonalysis of alkenes with suitable example.