ethane burns in oxygen to form CO2 and water according to the equation:2C2H6+7O2gives 4CO2+6H2O.if 1250 cc of oxygen is burnt with 300cc of ethane.calculate:(1) the volume of CO2 formed.(2)the volume of unused O2

2 C2H6  + 7 O2 --->4 CO2 +6 H2O 

 ethane rqd = 2volume 
oxygen rqd = 7 volume
 therefore for 300 cc of ethane 
volume of oxygen rqd = 150 x 7 cc = 1050 cc 
volume of carbon dioxide formed will be =  4 volume = 4 x 150 cc = 600 cc 
volume of unused oxygen left = 1250 - 1050 =200 cc

 

 

 

Regards

Arun (askIITians forum expert)