Answer to Question #319249 in General Chemistry for Karolyn

Question

B. A sample of neon gas at a pressure of 0.996 atm and a temperature of 28.9 °C, occupies a volume of 18.5 liters. If the gas is allowed to expand at constant temperature to a volume of 25.7 liters, the pressure of the gas sample will be ______ atm.

Answer 1

P₁ = 0.996 atm

V₁ = 18.5 L

T₁ = T₂ = 28.9°C = constant

P₂ = ???

V₂ = 25.7 L

Solution:

Since the temperature and amount of gas remain unchanged, Boyle's law can be used.

Boyle's gas law can be expressed as: P₁V₁ = P₂V₂

To find the new pressure, solve the equation for P₂:

P₂ = P₁V₁ / V₂

P₂ = (0.996 atm × 18.5 L) / (25.7 L) = 0.717 atm

P₂ = 0.717 atm

Answer: The pressure of the gas sample will be 0.717 atm