I’ve seen the all the posted answers for this question but the units does not ca

Question

I’ve seen the all the posted answers for this question but the units does not cancel out so I don’t need another answer like that! I need to learn how to do it canceling all units properly. Specially the first step on how to find the limiting reactant! 121. Consider the reaction: 2502(g) + O2(g)-2503(g) A reaction flask initially contains 0.10 atm of SO2 and 0.10 atm of O2. What is the total pressure in the flask once the limiting reactant is completely consumed? Assume a constant temperature and volume and a 100% reaction yield.

Explanation / Answer

SO2 is limitin greaction, since there is less pressur eof SO2

then

0.1 atm of SO2 --> 0.1 atm of SO3

then

P-O2 left = 0.1-0.1/2 = 0.05

Total P final = 0.1+0.05 = 0.15 atm

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