Question

Initial   Pressure   Initial   Temperature   Final   Temperature   Final   Pressure   (a) 276 torr 324 K 240 K ×...

Initial
  Pressure  		 Initial
  Temperature  		 Final
  Temperature  		 Final
  Pressure  
(a) 276 torr 324 K 240 K

×

10 torr
(b) 916 torr 23

°

C		 227 K

×

10 torr
(c) 2.74 atm 164

°

C		 25

°

C		 atm
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Homework Answers

Answer #1

a)

Given:

Pi = 276 torr

Ti = 324.0 K

Tf = 240.0 K

use:

Pi/Ti = Pf/Tf

276 torr / 324.0 K = Pf / 240.0 K

Pf = 204 torr

Answer: 204 torr

b)

Given:

Pi = 916 torr

Ti = 23.0 oC

= (23.0+273) K

= 296 K

Tf = 227.0 K

use:

Pi/Ti = Pf/Tf

916 torr / 296.0 K = Pf / 227.0 K

Pf = 702 torr

Answer: 702 torr

c)

Given:

Pi = 2.74 atm

Ti = 164.0 oC

= (164.0+273) K

= 437 K

Tf = 25.0 oC

= (25.0+273) K

= 298 K

use:

Pi/Ti = Pf/Tf

2.74 atm / 437.0 K = Pf / 298.0 K

Pf = 1.87 atm

Answer: 1.87 atm

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