Answer to Question #110908 in General Chemistry for Juan Pablo

Question

if the temperature of the helium balloon were increased from 30 celcius to 35 celcius and the volume of the ballon only expanded from 0.47 L to 1.55 L, how much pressure would be inside the ballon?

Answer 1

Let us assume that the initial pressure be p₁ and final pressure be p₂ so lets find out a relation between them

As the balloon is a closed body so air will escape through it which means that the number of moles initially and finally will be same

PV=nRT

n=PV/RT

as this n will be same on both sides so lets equate

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

$\frac{P_1}{P_2}=\frac{1.55\times303}{0.47\times308}=3.24$