Given `2 C _(2) H _(6) + 7 O _(2) to 4 CO _(2) + 6 H _(2)O`
200 cc of `O _(2)` was burnt with 400 cc of ethane,
Calculate the volume of `CO _(2)` formed and unused `O _(2).`

Explanation

The given equation is :
`2C_2H_6 + 7O_2 rarr 4CO_2 + 6H_2O`
So, according to above equation, 2 V (volumes) of ethane reacts to give 4 V of carbon dioxide.
So, 300 cc of ethane would give 600 cc of carbon dioxide.