V  1/P (Boyle’s law) V  T (Charles’s law) P  T (Gay-Lussac’s law) V  n (Avogadro’s law) So far we’ve seen… PV nT = R ideal gas constant: R = 0.08206.

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Presentation transcript:

V  1/P (Boyle’s law) V  T (Charles’s law) P  T (Gay-Lussac’s law) V  n (Avogadro’s law) So far we’ve seen… PV nT = R ideal gas constant: R = L∙atm / mol ∙ K constant PV = nRT Ideal Gas Law (same ratio for every gas) NO Units of : mL, mmHg, kPa, grams, °C

1.A 5.00 L balloon is at atm and 25 o C. How many moles of gas are in the balloon? Ideal Gas Law Calculations (0.855 atm)(5.00 L) = n ( )(298 K) (0.855)(5.00) ( )(298) = n n = mol PV = nRT R =

2.What is the pressure of mol He gas in a volume of 8.12 L at 0.00 o C? Ideal Gas Law Calculations P (8.12 L) = (0.435mol )( )(273 K) (0.435)( )(273) (8.12) = P P = 1.20 atm PV = nRT R =

Molar Mass 3.A sample of aluminum chloride gas weighing g at 350. o C and 760 mmHg of pressure occupies a volume of 19.2 mL. Calculate the Molar Mass of the gas. 133 g/mol Ideal Gas Law Calculations (1.00 atm)( L) = n ( )(623 K) n = mol PV = nRT R = grams mole M = __ g_ mol = AlCl 3 =