Question

The volume of a sample of CO2 is 4L at 66°C temperature and 1.2 atm pressure. At 42°C, the volume becomes 1.7 L. Calculate the pressure at this temperature. (The no. of moles hasn't changed.) ​

Answer 1

Using Charles's Law, the pressure at 42°C is 0.75 atm.

Step-by-step explanation:

To solve this problem, we can use Charles's Law, which states that the volume of a given amount of gas is directly proportional to its temperature, assuming the pressure and amount of gas remain constant.

According to the problem, the initial volume is 4 L at 66°C and the final volume is 1.7 L at 42°C. We can set up the following proportion:

4 L / 66°C = 1.7 L / 42°C

Solving this proportion, we find that the pressure at 42°C is 0.75 atm.