720 mL of #H_2# gas at 0 degree C and 126.6 kPa is changed to S .T. P. What will be its new volume?
The new volume will be 907 mL.
STP is defined as 0 °C and 1 bar (100 kPa).
Since only the pressure changes, we can use Boyle's Law to solve the problem.
Boyle's Law is
#color(blue)(bar(ul(|color(white)(a/a)P_1V_1 = P_2V_2color(white)(a/a)|)))" "#
We can rearrange Boyle's Law to get
#V_2 = V_1 × P_1/P_2#
In this problem,