What mass of carbon dioxide results from combustion of a #52*g# mass of acetylene gas?

1 Answer
anor277
May 27, 2017

We needs a stoichiometric equation, and we finally get a mass of #CO_2# under #200*g#.

Explanation:

And the typical rigmarole is to balance the carbons, and then the hydrogens, and then finally the oxygens.............

#HC-=CH(g) + 5/2O_2(g) rarr 2CO_2(g) +H_2O(l)#

Is this balanced? Don't trust my 'rithmetic!

And thus, moles of acetylene reactant:

#=(52*g)/(26.04*g*mol^-1)=2*mol#

Given the stoichiometry, we gets #4*mol# #CO_2(g)# given complete combustion, a mass of #4*molxx44.0*g*mol^-1=176*g# #"carbon dioxide.........."# Take that atmosphere!

Would this reaction be exothermic? Why or why not?

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