Gay-Lussac’s Law Problems
*Hint make sure the units are always in Kelvin before doing the question*
1. Find the missing values within the table:
a.
b.
c.
P1= 14atm
T1= 273.15K
P2= 19atm
T2= ? K
P1= 890mmHg
T1= ? K
P2=
760mmHg
T2= 101K
P1=
T1= 340K
P2= ? kPa
T2= 100K
T1= 380K
P2= 800Torr
T2= 120K
101.325kPa
d.
P1= ?Torr
2. Nitrogen in a container kept at 690 Torr is heated from 400K to 600K, what
must the new pressure of the gas be?
3. A sample of nitrogen at a temperature of 353 K with a pressure of 150kPa is
reduced to a pressure of 120kPa, because of a temperature change. What is
the final temperature of the gas in kelvin?
4. A sample of argon kept at 860mmHg was heated at 300K to 760K, what is
the final pressure of the argon?
5. A student within a lab at 101.325kPa decided to heat a neon sign at standard
ambient temperature (298.15K) to 500K exploding the neon sign, what
would have been the theoretical pressure of the final gas?
6. A scientist collects a solution of helium at 940 Torr in a balloon at 250K, if
the temperature drops to 90K what is the new pressure of the gas?
Gay-Lussac’s Law Problems
7. 5atm of pressure is applied to a gas at 230K, if the pressure is increased to
10 atm what is the final temperature?
8.
a.
b.
c.
d.
P1= 224 kPa
T1= 13OC
P2= 2.8atm
T2= ? K
P1= 780mmHg
T1= ? K
P2= 16atm
T2= 40OC
P1= ?Pa
T1= 40OC
P2= 4atm
T2= 280K
P1= 115000Pa
T1= 50OF
P2= ? Pa
T2= 400K
9. When a gas at 29 OC is compressed from 860Torr to 760Torr, what is the
final temperature in K.
10.When a balloon of helium at 25OC on the ground at 1 atm is let go it reaches
the atmosphere where the temperature decreases to 275K, what is the new
pressure of the gas in the balloon in Pa?
11. If a gas is at 870K but the pressure increased from 2atm to 2300Torr=what
is the final temperature in OF?
Answer Key:
1. a. 371 K, b. 118 K, c. 29.8 Pa, d. 2533 Torr
2. 1035 Torr
3. 282.4 K
4. 2179 mmHg
5. 169.923 kPa
6. 338 K
7. 460K
8. a. 362K, b. 20K, c. 453285Pa, d. 162458Pa
9. 267K
10. 93458Pa
11. 1910OF