MCQ
Which titrant is used in the Iodometric titration which involves I2 ?
- AKMnO4
- BK2Cr2O7
- CNa2S2O3
- DAll of them
Explanation:
Iodometry is one of the most important redox titration methods. Iodine reacts directly, fast and quantitively with many organic and inorganic substances.
Thanks to its relatively low, pH independent redox potential, and reversibility of the iodine/ iodide reaction, iodometry can be used both to determine amount of reducing agents (by direct titration with iodine) and of oxidizing agents (by titration of iodine with thiosulfate).
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$2A{B_3}(g) \rightleftharpoons {A_2}(g) + 3{B_2}(g)$. At equilibrium, $2\, mol$ of $A_2$ are found to be present. The equilibrium constant of this reaction is
$(a)$ How many $g$ orbital are present in the $g$ subshell ?
$(b)$ In what principal electronic shell whould the $g$ subshell first occur and what is the total number of orbitals in this principal shell ?