The $${\left( {{{\partial E} \over {\partial T}}} \right)_P}$$ of different types of half cells are as follows:
A | B | C | D |
---|---|---|---|
$$1 \times {10^{ - 4}}$$ | $$2 \times {10^{ - 4}}$$ | $$0.1 \times {10^{ - 4}}$$ | $$0.2 \times {10^{ - 4}}$$ |
(Where E is the electromotive force)
Which of the above half cells would be preferred to be used as reference electrode?
Choose the correct stability order of group 13 elements in their + 1 oxidation state :
Given below are two statements :
Statement I : According to Ellingham diagram, any metal oxide with higher $$\Delta$$G$$^\circ$$ is more stable than the one with lower $$\Delta$$G$$^\circ$$.
Statement II : The metal involved in the formation of oxide placed lower in the Ellingham diagram can reduce the oxide of a metal placed higher in the diagram.
In the light of the above statements, choose the most appropriate answer from the options given below :
Consider the following reaction:
$$2HSO_4^ - (aq)\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{(2)\,Hydrolysis}^{(1)\,Electrolysis}} 2HSO_4^ - + 2{H^ + } + A$$
The dihedral angle in product A in its solid phase at 110 K is :