Help w Chem gas law problem

Question

if the pressure of a ballon is 870 torr at room temp 20 c whats the temp of the room if the pressure is changed to 10 atm

gaylussac

Answer 1

Christine,

You keep asking questions dealing with the ideal gas law (or some variation), and one would think you'd be able to do some of these by yourself. We aren't here to do all of your homework for you. You should study the different gas laws (Gaylussac, Charles, Boyle, etc.) and understand when to use each.

In the current problem you are give:

Initial pressure = P1 = 870 torr x 1 atm / 760 torr = 1.14 atm*

Original temperature = T1 = 20ºC + 273 = 293K*

Final pressure = P2 = 10 atm

You are asked to find:

Final temperature = T2

*We must use temperature in Kelvin, so convert 20ºC to K by adding 273. T1 = 293K

*We must also use consistent units of pressure. Change 870 torr to atm by dividing by 760. P1 = 1.14 atm

P1 = P2

T1 T2

1.14 atm = 10 atm

293 K T2

T2 will be in K. If you want it in ºC, subtract 273