$25 mL$ of propane, $C X_{3} H X_{8}$ , is burnt completely in just sufficient oxygen. The total volume of the gaseous products in mL (nearest integer), measured at the same temperature and pressure and at $12 0^{\circ} C$ (water as vapour), is

Numerical answer type, answer in mL, tolerance 1.

Answer: 175 mL

C X_{3} H X_{8} + 5 O X_{2} 3 CO X_{2} + 4 H X_{2} O

25 mL

propane gives

75 mL

CO X_{2}

and

100 mL

H X_{2} O (g)

. Total

= 175 mL

. No oxygen is left since it was just sufficient.