MCQ
Select the correct IUPAC name for [Co(NH3)6]2+.
- AHexammoniacobaltate(II) ion
- BHexaamminecobaltate(II) ion
- CHexammoniacobalt(II) ion
- DHexaamminecobalt(II) ion
Explanation:
In [CO(NH3)6]2+ the oxidation state of CO is 2. So the correct IUPAC name is hexaamminecobalt(II) ion.
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$\text{H}^+(\text{aq})+\text{e}^-\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ \ }\frac{1}{2}\text{H}_2(\text{g});\ \ \ \ \ \text{E}^\ominus_{\text{Cell}}=0.00\text{V}$
$2\text{H}_2\text{O}_{(\text{l})}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ \ \ }\text{O}_{2(\text{g})}+4\text{H}^{+}_{(\text{aq})}+4\text{e}^-;\ \ \ \ \ \text{E}^0_{\text{Cell}}=1.23\text{V}$
$2\text{SO}^{2-}_{4(\text{aq})}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ \ \ }\text{S}_2\text{O}^{2-}_{8(\text{aq})}+2\text{e}^-;\ \ \ \ \ \text{E}^0_{\text{cell}}=1.96\text{V}$