Question

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

Answer 1

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?