ANALYSIS Volume of Hydrocabon at STP Mass of Hydrocashoo Mass of Hydrocarbon -Vo

Question

ANALYSIS Volume of Hydrocabon at STP Mass of Hydrocashoo Mass of Hydrocarbon -Volume Sample cakculation for one trial: 21/ 2 ) / )2 2. 1. Look for a pattem between the different mathematical operations (+, - x,/). Can you identify an operation that yields a value that is nearly constant? If so, what are the units and what does the value represent? The patern shows inthe deviding It preset ensity 2. Use the ideal gas equation to derive the volume of one mole of an ideal gas at STP (this is standard molar volume). 00 205)277) 128

Explanation / Answer

pattern shown shows that

PV/T = constant = nR

as only pressure , volume and temperature is changing

and calculating volume of 1 mole of ideal gas at STP

STP represents

T = 0 C = 273 K

P = 1 atm

R = 0.08206 L.atm/mol.K

n =1 mole

PV = nRT

V = 1 mole * 0.08206 L.atm/mol.K * 273 K / 1 atm = 22.4 L   

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