[afchick7689]

The problem reads:

Write a balanced molecular reaction for the hydrogenation of acetylene (ethyne) to the saturated alkane.  How many liters of hydrogen gas are needed to react completely with 100.0 liters of acetylene?

So before I begin the conversions, I wanted to make sure my equation was correct-- can someone please verfity that this is correct?

C2H2 + 2H2?C2H6

--And then can I use the below conversion to solve to find the liters of hydrogen gas needed to react with 100 liters of acetylene?

1 mole gas at STP = 22.4 liters

--thanks so much!

[Karakth]

That's all correct...Good luck!

Although the question didn't specify at what temperature and pressure the 100l of ethene were measured, but you would be right to assume STP.