4.4 gms of a hydrocarbons one combustion produced 6.72 L of CO_(2) at STP and sufficient water vapour that can generate 0.4gms of H_(2) with excess Na. The hydrocarbon is .x. times heavier than CO_(2). What is .x.?

4.4 gms of a hydrocarbons one combustion produced 6.72 L of CO_(2) at

1.	4.4 gms of a hydrocarbons one combustion produced 6.72 L of CO_(2) at STP and sufficient water vapour that can generate 0.4gms of H_(2) with excess Na. The hydrocarbon is .x. times heavier than CO_(2). What is .x.?
Answer» Solution :`2Na+2H_(2)Orarr2NaOH+H_(2)` `36g___________2g` `7.2g___________0.4g` `22.4LCO_(2)-STP-44g` `6.72LCO_(2)-STP-13.2g` `underset("propane")(C_(3)H_(8))+5O_(2)rarr3CO_(2)+4H_(2)O` `44g_______132g_______72g` `4.4g_______13.2g_______7.2g` `THEREFORE x=(44)/(44)=1`