SAT II Chemistry : Gas Laws

Study concepts, example questions & explanations for SAT II Chemistry

varsity tutors app store varsity tutors android store

Example Questions

Example Question #1 : Gas Laws

Suppose that an ideal gas at  and 2.0 atm has a volume of 11.2 cubic meters. Which of the following expressions represents the volume of the gas, in cubic meters, if the temperature were increased by  and the pressure decreased to 1.5 atm?

Possible Answers:

Correct answer:

Explanation:

First of all, the unit degrees Celsius should be converted to Kelvins by adding 273. This means that the temperature increases from 273 K to 323 K.

Next, the combined gas law can be used.

 

Plugging in the known values gives

  

and solving for the volume gives

 

Rearranging shows this is clearly equivalent to the correct answer, .

Learning Tools by Varsity Tutors

Incompatible Browser

Please upgrade or download one of the following browsers to use Instant Tutoring: