Question

Air in a tightly sealed bottle has a pressure of 0.978 atm at 25.5°C. What will its pressure be if the temperature is raised to 46.0°C?

Answer 1

This sounds dangerous; I hope it was not a glass bottle.

Explanation:

At constant volume, and constant amount of gas, `(P_1)/T_1=P_2/T_2`.

Thus `P_2` `=` `(P_1)/T_1xxT_2`.

With all gas problems, we use absolute temperature:

`"Absolute Temperature (K)"` `=` `""^(@)C+273.15*K`

`P_2` `=` `(0.978*atm)/(298.5*K)xx329*K` `=` `??atm`.

Why would this experiment be a problem, it if were a glass bottle?