A gas sample in a closed,expandable container of initial volume 5.00 L was allowed to warm from 25 °C to What was its new volume?
A)4.84 L
B)5.17 L
C)7.00 L
D)3.57 L
E)4380 L

Question

A gas sample in a closed,expandable container of initial volume 5.00 L was allowed to warm from 25 °C to  What was its new volume?
A)4.84 L 
B)5.17 L 
C)7.00 L 
D)3.57 L 
E)4380 L

Quizplus · Accepted Answer

According to Charles's law, the volume of a gas is directly proportional to its temperature (in Kelvin) at constant pressure. We can convert the initial and final temperatures to Kelvin by adding 273.15 to each. 
Initial temperature: 25 °C + 273.15 = 298.15 K 
Final temperature: 117 °C + 273.15 = 390.15 K 
Using the formula V1/T1 = V2/T2 and solving for V2, 
V2 = (V1/T1) x T2 
V2 = (5.00 L/298.15 K) x 390.15 K 
V2 = 5.17 L (rounded to two significant figures)

A Gas Sample in a Closed,expandable Container of Initial Volume