Question

How much oxygen is required for complete combustion of 560 g of ethane?

• A. 6.4 kg
• B. $1.92kg$
• C. $2.8kg$
• D. $9.6kg$

Answer 1

Answer: (B)

$1.92kg$

Answer 2

(2) : $\underset{28g}{C_{2}H_{4}} + \underset{3 \times 32 = 96g}{3O_{2}} \rightarrow 2CO_{2} + 2H_{2}O$

28 g of $C_{2}H_{2}$requires 96g of $O_{2}$

560 g of $C_{2}H_{4}$requires $\frac{96}{28} \times 560$

$= 1920gor1.92kgofO_{2}$