Question

What volume of $O_2$ would be required to burn exactly 500 litres of acetylene gas, if all gases are at the same temperature and pressure?

• A. 1000 lit
• B. 1350 lit
• C. 1250 lit
• D. 1200 lit

Answer 1

The correct option is C 1250 lit

$C_2{H}_2+\frac{5}{2}{O}_2\to 2C{O}_2+H_{2}O$

Volume of $O_2$ required$=\frac{5}{2}\times 500=1250litres$