Mr. Sang Cheng burned 50 L of acetelyne  (C2H2) at STP in a constant pressure piston. The piston expanded until the reaction was over. The reaction proceeds:  2C2H2 (g)+5O2 (g)➜4CO2 (g)+2H2 (g) a. How many moles of acetelyne is available for reaction? b. Assuming that all of the acetylene reacted, how many moles of CO2 was formed? c. What volume is occupied by the CO2 at STP?

Chemistry: Principles and Practice
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Chapter5: Thermochemistry
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Mr. Sang Cheng burned 50 L of acetelyne  (C2H2) at STP in a constant pressure piston. The piston expanded until the reaction was over. The reaction proceeds: 

2C2H2 (g)+5O2 (g)➜4CO2 (g)+2H2 (g)

a. How many moles of acetelyne is available for reaction?

b. Assuming that all of the acetylene reacted, how many moles of CO2 was formed?

c. What volume is occupied by the CO2 at STP?

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