Question

Lab Instructor Experiment 8-Gas Laws Prelaboratory Exercises 1. Fill in the blanks in a through d. a As the pressure on a sample of a gas increases at constant temperature, the volume of As the number of moles of a gas increases at constant pressure and temperature, the volume of the gas c. The volume of a sample of hydrogen gas at STP is 1.00 liter. As the tempern- ture decreases, at constant pressure, the volume of the sample d. As the temperature of a sample gas increases at constant volume, the pressure of the gas sample For questions 2-4 show all calculations. 2. A 100-milliliter sample of a gas at a pressure of 380. tor is reduced to 190. tor at con- stant temperature. What is the new volume of the gas? 3. At constant pressure, 8.0 liters of a gas is heated from 25.5°C to 50°C. What is the new volume of the gas? 4. At constant volume, the temperature of 2.0 atm of gas was 325 K. The temperature is increased to 400 K. What is the new pressure of the gas?

Answer 1

Solution 1 :

a) As the pressure on the sample of gas increases at constant temperature the volume of a gas decreases in Boyle's Law.

b) As the number of moles of a gas increases at constant pressure and temperature, the volume of the gas increases in Avogadro Law.

c) The volume of a sample of hydrogen at STP is 1 litre. As the temperature decreases, at constant pressure, the volume of the sample decreases in Charles' Law.

d) As the temperature of a sample of gas increases at constant volume the pressure of the gas sample increases in Gay-Lussac's Law