Answer to Question #10233 in Organic Chemistry for john

Question

calculate volume of air needed for combustion of 1 kg of carbon

Answer 1

The reaction is

C + O₂ = CO₂

The quantity of carbon is

n(C) = m(C)/M(C) = 1000g/12g/mol = 83.3 mol.

The quantity of O₂ is

n(O₂) = n(C) = 83.3 mol

The volume of O₂ is

V(O₂) = n(O₂)*V_m = 83.3mol*22.4L/mol = 1866 L = 1.87 m^3

The volume of air is

V(air) = V(O₂)/w(O₂) = 1.87m^3/0.21 = 8.9 m^3