Answer to Question #194721 in Chemistry for Tor

Question

A sample of gas occupies 175mL at 10.0C. What volume in mL will the gas have at 20.0C and 750mm Hg?

Answer 1

According to the gas law:

p₁V₁/T₁ = p₂V₂/T₂

where p1 - initial pressure, V1 - initial volume, T1 - initial temperature (10.0 °C = 283.15 K), p2 - final pressure, V2 - final volume, T2 - final temperature (20.0 °C = 293.15 K).

If the pressure is not changed:

V₁/T₁ = V₂/T₂

From here:

V2 = V₁T₂/T₁ = 175 mL × 293.15 K / 283.15 K = 181.2 mL

Answer: 181.2 mL