A 10.0 L flask contains 2.5 atm of ethane gas and 8.0 atm of oxygen gas at 28ºC. The contents of the flask rea?
A 10.0 L flask contains 2.5 atm of ethane gas and 8.0 atm of oxygen gas at 28ºC. The contents of
the flask react until the limiting reactant is consumed. What is the total pressure in the flask after
the temperature returns to 28ºC?
2C2H6(g) + 7O2(g) ® 4CO2(g) + 6H2O(g)
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use this formula to calculate moles of each
PV=nRT, where p is pressure, v is volume, n is number of moles, r is constant or .08206, t is temperature
use this to determine limiting reagent
then find out how much can be produced from that limting reagent and find those pressures using the same formula as before
do not forget to find the pressure of the reactant in excess as well, and know how much is in excess too.
add these pressures together for your total pressure