Question

Review Constants Periodic Table A 1.633 g sample of a component of the light petroleum distillate called naphtha is found to yield 5.005 g CO2(g) and 2.390 g H2O(1) on complete combustion. Part A This particular compound is also found to be an alkane with one methyl group attached to a longer carbon chain and to have a molecular formula twice its empirical formula. Use the masses of carbon dioxide, CO2, and water, H, O, to determine the empirical formula of the alkane component. Express your answer as a chemical formula. The compound also has the following properties: View Available Hint(s) 0 • melting point of -154°C. • boiling point of 60.3°C • density of 0.6532 g/mL at 20°C, • specific heat of 2.25J/(g. °C), and • AH = -204.6 kJ/mol. AED RO? Submit Part B Complete previous part(s) Part C Complete previous part(s)

Answer 1

PART-A The compound is an alkane It contains only cand it alons Mass of co₂ = 5.005g Holes of c = 5.005 g = 0.11375 mol 44g1 mot Mass of the = 2.390g of the = 2.390g x2 = 0.265 mol بمقامع 18g mal Moles of both = 0.11375 : 0.2655 Divide boter by 0.11375 + CoH = 1 : 2.33 Multsply both by 3 CiH = 3:1 So, the empirical formula is Cahy