Liquid hexane ch3ch24ch3 reacts with gaseous oxygen gas o2 to produce gaseous carbon dioxide co2 and gaseous water h2o . what is the theoretical yield of carbon dioxide formed from the reaction of 81.0g of hexane and 360.g of oxygen gas?

The theoretical yield of carbon dioxide formed from the reaction of 81.0g of hexane and 360.g of oxygen gas is  312.63 grams

calculation

 step 1 :write the equation for reaction

2CH3(CH2)4CH3  +19 O2  →   12CO2  +14 H2O

step2:

   find moles of each reactant

mole= mass/molar mass

moles of CH3(CH2)4CH3 =  81 g / 86 g/mol = 0.942 moles

moles of O2=  360g/32  =11.25  moles

step 3:   find the moles of CO2

since O2 is the limiting reagent  and the mole ratio in equation above of O2 :CO2 is 19 :12 the moles of CO2

=  11.25 x12/19 =7.1053 moles

step  4: find the theoretical yield

= moles x  molar mass (44g/mol)

- 7.1053 moles x 44 g/mol= 312.63 grams

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  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-