Question
Liquid hexane (CH(CH).CH, will react with gaseous oxygen (0) to produce gaseous carbon dioxide (CO2) and...
Liquid hexane (CH(CH).CH, will react with gaseous oxygen (0) to produce gaseous carbon dioxide (CO2) and gaseous water (HO). Suppose 65.5 g of hexane is mixed with 65. g of oxygen. Calculate the minimum mass of hexane that could be left over by the chemical reaction. Round your answer to 2 significant digits. X $
Answers
2 C6H14 + 19 O2 = 12 CO2 + 14 H2O
Mole of hexane = 65.5 g /86 g/mol = 0.761 mol.
Mole of oxygen = 65 g / 32 g /mol = 2.03 mol.
For 19 mole Oxygen - - - - - 2 mole hexane
For 2.03 mole Oxygen - - - - - 0.214 mol hexane.
Excess hexane left = ( 0.761 - 0.214) = 0.547 mole
Mass of hexane leftover = mole × Molar mass
Mass = 0.547 mole × 86 g/mole = 47. 04 g
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