Gases

Gases ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Gases ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Gases - CCRS ,[object Object],[object Object],[object Object],[object Object],[object Object]

Prior Knowledge ,[object Object],[object Object],[object Object]

KMT – thinking about gas particles ,[object Object],[object Object],[object Object],[object Object],[object Object]

Gas Law Problems ,[object Object],Prediction: ______________________ What conversions are necessary? Variable Initial Final P V n T

Gas Formulas = = Pressure)(Volume) = (moles)(Ideal Gas Constant)(Temperature) PV = nRT Total pressure of a gas = sum of the partial pressures of the component gas P t = P 1 + P 2 + P 3 +…

A sample of gas occupies a volume of 1.60 L at a pressure of 720. torr. What would be the pressure of this gas if it were compressed to 1.20 L at the same temperature? ,[object Object],[object Object],[object Object],[object Object],[object Object]

Two flasks are connected by a stopcock as shown below. The 5.0 L flask contains CH 4 at a pressure of 3.0 atm, and the 1.0 L flask contains C 2 H 6 at a pressure of 0.55 atm. Calculate the pressure of CH 4 after the stopcock is opened. Assume that the temperature remains constant.

Gas Law Problems What conversions are necessary? Variable Quantity Conversions P V n T

What would be the mass of 400. mL of hydrogen collected at 20 ° C and 740 torr?

P t = P 1 + P 2 + P 3 +… A gaseous mixture containing 1.5 moles argon and 3.5 moles of carbon dioxide has a total pressure of 7.0 atm. What is the partial pressure of carbon dioxide?

P atm = P gas + P water vapor

Gas Stoichiometry ,[object Object],[object Object]

2 K + 2 H 2 O  2 KOH + H 2 ,[object Object],[object Object]

Each of the following examples gives a change in volume, temperature, amount, or pressure of a gas sample. Indicate whether the other variable mentioned would increase or decrease. If a variable is not mentioned, assume it is constant. ,[object Object],[object Object],[object Object],[object Object],[object Object],Focus on conceptual understanding as well as the quantitative problems

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Gases

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Gases