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unit 3 (cptr5)

Application of the ideal gas law,Gas density,molar mass of a gas,and gas stoich

QuestionAnswer
What is standard temperature and pressure (STP)? 273.15 degrees K and 1 atm
What is molar volume? Molar volume is the volume occupied by one mole of a substance. is 22.4 L
Calculate the molar volume of a gas at STP is 22.4 L. V= (nRT)/P = (1 mol (0.08206) (273.15))/1
Why is the molar volume of an ideal gas at STP constant, regardless of the identity of the gas? he molar volume of an ideal gas at STP is constant because it is determined solely by the Ideal Gas Law, which applies universally to all gases under the same conditions of temperature and pressure.
Describe how the ideal gas equation can be used to calculate the molar mass of a gas. The number of moles can be determined from rearranging the ideal gas equation to n= (PV)/(RT). once you find the # of moles use this equation: mm= mass/moles. (molar mass is equal to the mass of the given gas divided by the number of moles)
Describe how the ideal gas equation can be used to calculate the density of a gas d= (PM)/(RT) P is the pressure atm, M is the molar mas of the gas g/mol, R is the gas constant, and T is the temperature K.
What is Avogadro’s law, and under what conditions does it apply? the volume of a gas at constant temperature and pressure is directly proportional to the number of moles of gas present.
Describe how the ideal gas equation can be used in stoichiometry. 1. Write the Balanced Equation 2. Identify Given and Unknown Variables 3. Use the Ideal Gas Equation needed 4. Convert Between Moles and Volume 5. Apply Stoichiometry
Created by: marshallw
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