Question

Which of the following conditions must be met for a volume ratio to be created from a balanced chemical equation?

Changing temperature and pressure
Constant temperature and pressure
Changing temperature and constant pressure
Constant temperature and changing pressure

Answer 1

Constant temperature and pressure

Answer 2

Answer: Option (b) is the correct answer.

Step-by-step explanation:

According to ideal gas law, the product of pressure and volume is equal to the product of number of moles, gas constant and temperature.

Mathematically, PV = nRT

So, when there are two gases with equal number of moles behaving ideally then the ideal gas equation will be as follows.

`(P_(1)V_(1))/(T_(1))` =
`(P_(2)V_(2))/(T_(2))`

and
`(V_(1))/(V_(2))` =
`(P_(2)T_(1))/(P_(1)T_(2))`

Hence, when temperature and pressure of both the gases will be constant then
`(V_(1))/(V_(2))` = 1.

Thus, we can conclude that constant temperature and pressure is the conditions that must be met for a volume ratio to be created from a balanced chemical equation.