An ideal gaseous mixture of ethane ( C 2 H 6) and ethene ( C 2 H 4) occupies 28 litre at 1 atm and 273 K. The mixture reacts completely with 128 g O 2 to produce CO 2 and H 2 O. Mole fraction at C 2 H 6 in the mixture is:

Question

An ideal gaseous mixture of ethane ( C 2 H 6) and ethene ( C 2 H 4) occupies 28 litre at 1 atm and 273 K. The mixture reacts completely with 128 g O 2 to produce CO 2 and H 2 O. Mole fraction at C 2 H 6 in the mixture is: (A) 0.6 (B) 0.4 (C) 0.5 (D) 0.8

Tardigrade Admin · Accepted Answer

C 2 H 6+3.5 O 2 arrow 2 CO 2+3 H 2 O C 2 H 4+3 O 2 arrow 2 CO 2+2 H 2 O Let volume of ethane is x litre. 22.4 × 4=3.5 x+3(28-x) ⇒ x=11.2 litre at constant T and P , V propto n ⇒ Mole fraction of C 2 H 6 in mixture =(11.2/28)=0.4

Q. An ideal gaseous mixture of ethane (C2​H6​) and ethene (C2​H4​) occupies 28 litre at 1atm and 273K. The mixture reacts completely with 128gO2​ to produce CO2​ and H2​O. Mole fraction at C2​H6​ in the mixture is:

0.6

0.4

0.5

0.8

C2​H6​+3.5O2​→2CO2​+3H2​O C2​H4​+3O2​→2CO2​+2H2​O Let volume of ethane is x litre. 22.4×4=3.5x+3(28−x) ⇒x=11.2 litre at constant T and P,V∝n ⇒ Mole fraction of C2​H6​ in mixture =2811.2​=0.4

Q. An ideal gaseous mixture of ethane $(C_{2} H_{6})$ and ethene $(C_{2} H_{4})$ occupies $28$ litre at $1 a t m$ and $273 K$ . The mixture reacts completely with $128 g O_{2}$ to produce $C O_{2}$ and $H_{2} O$ . Mole fraction at $C_{2} H_{6}$ in the mixture is: