MCQ
Petroleum consists mainly of
- ✓Aliphatic hydrocarbons
- BAromatic hydrocarbons
- CAliphatic alcohols
- DNone of these
(propane, propylene, butane, and butylene in various mixtures).
It is produced as a by-product of natural gas processing and petroleum refining.
Petroleum is a mixture of a very large number of different hydrocarbons; the most commonly found molecules are alkanes (paraffins), cycloalkanes (naphthenes), aromatic hydrocarbons, or more complicated chemicals like asphaltenes.
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$Mn^{2+} +2e- \rightarrow Mn;\, E^o = -1.18\,V$
$2(Mn^{3+} +e^- \rightarrow Mn^{2+} )\,;\,E^o=+1.51\,V$
The $E^o$ for $3Mn^{2+} \rightarrow Mn+ 2Mn^{3+}$ will be :