Question

What volume (liters) of oxygen would be needed to completely burn 75.0 liters of acetylene C2H2 at STP?

Answer 1

Answer: The volume of oxygen that would be needed to completely burn

75.0 liters of acetylene
`C_(2) H_(2)` at STP is 187.5 liters.

Definition of volume : -Volume is the amount of space occupied by a substance, while mass is the amount of matter it contains. The units of volume are liter, milliliter,

Definition of STP : Standard temperature and pressure (STP) refers to the nominal conditions in the atmosphere at sea level. These conditions are 0 degrees Celsius and 1 atmosphere (atm) of pressure. The STP value is important to physicists, chemists, engineers, pilots and navigators, among others.

Explanation: Given : Volume of acetylene
`C_(2) H_(2)` =
`75` liters.

When oxygen is burnt in acetylene , the chemical reaction is given as:

`C{2} H_(2) + (5)/(2) O_(2) = 2CO_(2) +H_(2O)`

So, for
`75` liters of acetylene Volume of oxygen required =
`(5)/(2)` ×
`75` =
`187.5` liters.

Final answer : The volume in liters of oxygen that would be needed to completely burn 75.0 liters of acetylene
`C_(2) H_(2)` at STP is 187.5 liters