Question

# Gaseous ethane CH3CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and...

Gaseous ethane CH3CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O . Suppose 0.30 g of ethane is mixed with 2.20 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Round your answer to 2 significant digits.

equetion; 2CH3CH3(g)  + 7O2(g) -----> 4CO2(g) + 6 H2O(g)

0.3 g 2.20 g (?)g

Ethane mol. mass=30 g

O2  Mol. mass= 32 g

CO2 mol. mass= 44 g

0.3 g Ethane is 0.3/30 = 0.01 mole ; 2.20 g O2 is 2.20/32= 0.0687 mole

from equetion,1 mole Ethane required 3.5 mole O2

so, 0.01 mole Ethane required= 0.01*3.5=0.035 mole O2

we have enough amount of O2, so, Ethane is limiting reagent

from equetion;

1 mole Ethane produce 2 mole CO2

0.01 mole Ethane produce = 0.01*2= 0.02 mole CO2 =0.88 g CO2

given reaction produce 0.88 g Carbon dioxide

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