In an auto engine having no pollution co...

In an auto engine having no pollution control device `5%` of the fuel `(C_(8)H_(18))` is left unburnt. Molar ratio under same `P` and `T` of `CO` and `C_(8)H_(18)` emitted in exhaust gas is .

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A hydrocarbon with formula C_(8)H_(18) gives one monochloro derivative. The hydrocarbon can be:

Compute the volume of oxygen needed for complete combustio fo 114g of octane (C_(8)H_(18)) at STP.

An alkyl bromide A has molecular formula C_(8)H_(17)Br and four different structures can be drawn for it, all optically active. A on refluxing with ethanolic KOH solution yields only one elirnination product B(C_(8)H_(16)) which it still enantiomeric. B on treatment with H_(2)//Pt yields C(C_(8)H_(18)) which does not rotate the plane polarized light, B on ozonolysis followed by work-up with H_(2)O_(2) yields D(C_(7)H_(14)O) as one product which it still resolvable. Deduce structures of A to D.

The structue of alkane or cycloalkane with molecular formula C_(8)H_(18) that has only 1^(@) H atoms is:

The standard enthalpy of formation of octane (C_(8)H_(18)) is -250kJ //mol . Calculate the enthalpy of combustion of C_(8)H_(18) . The enthalpy of formation of CO_(2)(g) and H_(2)O(l) are -394 kJ//mol and -286kJ//mol respectively.

Total number of structural isomers possible from molecular formula C_(8)H_(18) that contain 7 carbons in the parent chain are:

One of the reactions used in the petroleum industry for improving octance number of fuels is C_(7) H_(14) rarr C_(7)H_(8) + 3H_(2) The two hydrocarbons C_(7) H_(14) and C_(7)H_(8) are liquid, H_(2) formed is gas. Whatis the percentage reduction in liquid weight accompanying the completion of the above reaction?

Arrange the following in the decreasing order of their boiling points: I. C_(9)H_(20) II. C_(8)H_(18) III.

What volume of oxygen gas (O_(2)) measured at 0^(@)C and 1 atm is needed to burn completely 1 L of propane gas (C_(3)H_(8)) measured under the same condition?

Draw different isomers having the following molecular formula: (i) C_5 H_(12)"(chain)" (ii) C_4H_(8)"(position)"

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