Answer to Question #200143 in Chemistry for Say

Question

Gas Law(What volume does a sample of gas at 60°C and 110kPa occupy if at STP the volume of the gas is 250mL)

Answer 1

pV = nRT

1) The conditions set by STP is T=273.15 K (0°C or 32°F) and p=10⁵ Pa.

R = 8.3 m³⋅Pa⋅K⁻¹⋅mol⁻¹ = 8.3 L⋅kPa⋅K⁻¹⋅mol⁻¹

The amount of gas under these conditions will be:

n = pV / RT = (10⁵ x 0.00025) / (8.3 x 273.5) = 0.011 mol

2) V = nRT / p = (0.011 x 8.3 x (273 +60)) / 110 = 0.27 L = 270 ml