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The Light Alcohols in Table 16 CnH2n+1OH\mathrm { C } _ { n } \mathrm { H } _ { 2 n + 1 } \mathrm { OH }

Question 9

Essay

The light alcohols in Table 16.1 are referred to as monohydric alcohols and have the formula CnH2n+1OH\mathrm { C } _ { n } \mathrm { H } _ { 2 n + 1 } \mathrm { OH } . Common heavier monohydric alcohols are pentanol (n=5)( n = 5 ) and cetyl alcohol (n=16)( n = 16 ) .
(a) Write the formula for the combustion of pentanol and cetyl alcohol.
(b) Calculate the mass of CO2\mathrm { CO } _ { 2 } produced per kg\mathrm { kg } of alcohol for these two materials.
(c) Locate values for the heat of combustion for these two compounds and calculate the mass of CO2\mathrm { CO } _ { 2 } produced per MJ\mathrm { MJ } of energy. Comment on the trend which is shown in these results.

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