6 litre mixture of methane and propane, on complete combustion, gives 7 litres of CO2. The composition of the mixture is

Question

6 litre mixture of methane and propane, on complete combustion, gives 7 litres of CO2. The composition of the mixture is (A) 6 L and 1 L (B) 5.5 L and 1.5 L (C) 5.5 L and 0.5 L (D) 2 L and 5 L

Tardigrade Admin · Accepted Answer

Let CH4 = x L and C3H8 = (6 -x)L CH4 + 2O2 → CO2 + 2H2O 1 L of CH4 gives = 1L of CO2 x L of CH4 gives = xL of CO2 C3H8 + 5O2 → 3CO2 + 4H2O 1L of C3H8 gives = 3L of CO2 (6 - x ) L = 3(6 - x) = (18 - 3x) L of CO2 Total CO2 produced = x + 18 - 3x = 7L Solve for x

Q. $6$ litre mixture of methane and propane, on complete combustion, gives $7$ litres of $C O_{2}$ . The composition of the mixture is

$6 L$ and $1 L$

$5.5 L$ and $1.5 L$

$5.5 L$ and $0.5 L$

$2 L$ and $5 L$

Q. 6 litre mixture of methane and propane, on complete combustion, gives 7 litres of CO2​. The composition of the mixture is

6L and 1L

5.5L and 1.5L

5.5L and 0.5L

2L and 5L

Let CH4​=xL and C3​H8​=(6−x)L CH4​+2O2​→CO2​+2H2​O 1L of CH4​ gives =1L of CO2​ xL of CH4​ gives =xL of CO2​ C3​H8​+5O2​→3CO2​+4H2​O 1L of C3​H8​ gives =3L of CO2​ (6−x)L=3(6−x)=(18−3x)L of CO2​ Total CO2​ produced =x+18−3x=7L Solve for x

Q. $6$ litre mixture of methane and propane, on complete combustion, gives $7$ litres of $C O_{2}$ . The composition of the mixture is

$6 L$ and $1 L$

$5.5 L$ and $1.5 L$

$5.5 L$ and $0.5 L$

$2 L$ and $5 L$