please help with questions 1 and 2 Question 1: Which of the two fuels below shou

Question

please help with questions 1 and 2

Question 1: Which of the two fuels below should have a higher octane rating? Please explain. (a) octane (CH30H2CH20H2CH2CH20H2CH3) or 2.3,3 trime hy pentane [CH3CH (CH3)C(CH3)2CH2CH3]? (b) benzene or he Question 2: Water gas (which is is a mixture of H2 and co) can be made by reacting red hot charcoal (C) with steam (H20) a, White the balanced equation for this reaction b. Show how can the obtained water gas self be used as a fuel (write the balanced reactions of complete combustion of H2 and CO)

Explanation / Answer

1 ) The more branched of the two hydrocarbons would have the higher octane value.

So, a) Octane or 2,3,3 - trimethyl-pentane

2,3,3 - trimethyl-pentane will have higher octane value than octane .

b) Benzene or hexane

Benzene will have higher octane value than hexane.

2 ) Water gas - Balanced reaction

H2O + C H2 + CO (H = +131 kJ/mol)

O2 + C CO2 (H = 393.5 kJ/mol)

O2 + 2 C 2 CO (H = 221 kJ/mol)

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