Question

# Match the column I with column II to identify the products of oxidation of alkanes and mark the appropriate choice.Column IColumn II(A)$$CH_4+2O_2\xrightarrow [{[O]}]{ KMnO_4 }$$(i)$$HCOOH + H_2O$$(B)$$2CH_4 + O_2 \xrightarrow [ { 100\, atm } ]{ Cu/523\, K }$$(ii)$$CO_2 + 2H_2O$$(C)$$CH_4+O_2 \xrightarrow [ { \Delta \ } ]{ Mo_2O_3\quad }$$(iii)$$2CH_3OH$$(D)$$CH_4 + \frac { 3 }{ 2 } O_2 \xrightarrow [ ]{ (CH_ 3COO)_ 2Mn }$$(iv)$$HCHO + H_2O$$

A
(A)(i),(B)(ii),(C)(iii),(D)(iv)
B
(A)(ii),(B)(iii),(C)(iv),(D)(i)
C
(A)(iv),(B)(ii),(C)(iii),(D)(i)
D
(A)(iii),(B)(i),(C)(ii),(D)(iv)

Solution

## The correct option is B $$(A) \rightarrow (ii), (B) \rightarrow (iii), (C) \rightarrow (iv), (D) \rightarrow (i)$$(A) $$C{H}_{4} + 2{O}_{2} \xrightarrow[{[O]}]{KMn{O}_{4}} C{O}_{2} + 2{H}_{2}O$$ (ii)The above reaction is complete oxidation or combustion of alkanes.(B) $$2C{H}_{4} + {O}_{2} \xrightarrow[\text{100 atm}]{Cu/523K} 2C{H}_{3}OH$$ (iii)When a mixture of methane and oxygen is passed through copper tubes at 523K and 100 atm, Methyl alcohol is produced.It is an example of controlled oxidation.(C) $$C{H}_{4} + {O}_{2} \xrightarrow[\Delta]{{Mo}_{2}{O}_{3}} HCHO + {H}_{2}O$$ (iv)Products formed in the above reaction are $$HCHO \; and \; {H}_{2}O$$ i.e, formaldehyde and water. It is also an example of controlled oxidation.(D) $$C{H}_{4} + \cfrac{3}{2}{O}_{2} \xrightarrow{{(C{H}_{3}COO)}_{2}Mn} HCOOH + {H}_{2}O$$ (i)Chemistry

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