Question

An empty plastic bottle is sealed in a cool room and then moved to a very hot room. What can best be stated about the air pressure inside the bottle when the bottle reaches room temperature?
A. It is lower than the pressure on the outside of the bottle.
B. It is higher than the pressure on the outside of the bottle.
C. It is the same as the pressure on the outside of the bottle.
D. It exerts twice the force per unit area as the air pressure outside the bottle.

Answer 1

Answer: The correct answer is an option(B).

Explanation:

According to Gay Lussac's Law:

" The pressure exerted by the gas is directly proportional to the temperature of the gas in Kelvins when volume is kept constant."

$(Pressure)\propto (Temperature)$ (Constant volume)

When an empty plastic bottle is sealed in a cool room and then moved to a very hot room. This changed the temperature of the air inside the bottle that is increase in temperature of the gas inside the sealed bottle.Since, the pressure of the gas is varies directly with temperature, pressure inside the bottle will get increased.

Hence, the correct answer is an option(B).

Answer 2

It is higher than the pressure on the outside of the bottle.