Multiple Choice
A sample of oxygen gas has a volume of 640 mL at a temperature of 23°C. At what temperature (in °C) will the volume of the oxygen be 820 mL, assuming pressure and amount of gas are constant?
7. Gases
The Ideal Gas Law Applications
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
At what temperature in °C does 250.0 mL of argon gas at 25°C and 1.50 atm occupy a volume of 450.0 mL at a pressure of 1.90 atm, according to the Ideal Gas Law?
A
150°C
B
100°C
C
45°C
D
75°C
Verified step by step guidance1
Start by recalling the Ideal Gas Law, which is expressed as \( PV = nRT \), where \( P \) is pressure, \( V \) is volume, \( n \) is the number of moles, \( R \) is the ideal gas constant, and \( T \) is temperature in Kelvin.
Since the number of moles \( n \) and the gas constant \( R \) remain constant, you can use the combined gas law: \( \frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2} \).
Convert the initial temperature from Celsius to Kelvin by adding 273.15 to the Celsius temperature: \( T_1 = 25 + 273.15 \).
Substitute the known values into the combined gas law equation: \( \frac{1.50 \text{ atm} \times 250.0 \text{ mL}}{T_1} = \frac{1.90 \text{ atm} \times 450.0 \text{ mL}}{T_2} \).
Solve for \( T_2 \) in Kelvin, and then convert it back to Celsius by subtracting 273.15 from the Kelvin temperature.
4:09mWatch next
Master Ideal Gas Law Relationships with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
The Ideal Gas Law Applications practice set
Problem sets built by lead tutorsExpert video explanations