The vol of CO2 released when 6g of carbon combusrs completed ?

1 Answer
Jul 4, 2017

Volume of CO_2 = 11.25 dm^3

Explanation:

Here is the equation of reaction (Combustion of Carbon)

CO_2 -> C + O_2

Mass of solute = 6g

Molar mass of Carbon = 12gmol^-1

Recall -> Amount in moles = (Mass)/(Molar mass)

"Amount in moles" = (Mass of Carbon)/(Molar mass of carbon)

"Amount in moles" = 6/12

"Amount in moles of C" =0.5 mols

From the stoichiometric equation we have 1 : 1 : 1 as the ratio

Since 1 mol of CO_2 yields 1 mol of C

:. 0.5 mol of CO_2 yields 0.5mol of C

Hence "No of moles of" CO_2 = 0.5 mols

Also Recall -> Amount in moles = "Volume of solution"/"Molar volume"

-> "Volume of" CO_2 = "Number of moles of" CO_2 xx "Molar Volume"

Note that: "Molar Volume" = 22.5mol^-1dm^3 "at s.t.p"

"Volume of" CO_2 = 0.5cancel(mol) xx 22.5cancel(mol^-1)dm^3

"Volume of" CO_2 = (0.5 xx 22.5) dm^3

Volume of CO_2 = 11.25 dm^3