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(a)The following equations represents two different types of reactions
(i)`nC_4H8_((g)`→(`C_4H_8)n` (s)
(ii)`C_2H_6 (g)` +`Cl_2` (g)`overset(U.V)(rightarrow)``C_2H_5Cl` (l)+ HCl (g)
State the type of reaction represented by: (i) and (ii).
(b)The fermentation of glucose produces ethanol as shown in the equation below:
`C_6H_12O_6` (g)`overset(yeast)(->)` 2`CH_3CH_2OH` (aq) +2`CO_2`(g)
This process produces about 10% ethanol by volume.
(i)State how the concentration of ethanol produced could be increased.
(ii)State and explain the observation that would be made when a piece of sodium metal is added to a sample of ethanol contained in a beaker.
(iii)Give two commercial uses of ethanol other in the manufacture of alcohol drinks.
(c) The molecular formula of a hydrocarbon is `C_6H_14`. The hydrocarbon can be converted into two other hydrocarbons as shown by the equation below.
`C_6H_14->`X+`C_3H_8`
(i)Name and draw the possible structural formula of X.