According to the following reaction, how many grams of ethane (C2H6) will be formed upon the complete reaction of 22.8 grams of ethylene (C2H4) with excess hydrogen gas?

Question

hydrogen (g) + ethylene (C₂H₄) (g) ethane (C₂H₆) (g)



Answer 1

C₂H₄(g) + H₂(g) ==> C₂H₆(g) ... balanced equation

22.8 g.......xs..............? g.......

Using dimensional analysis and converting to moles and then back to grams, we have...

22.8 g C₂H₄ x 1 mol C₂H₄/28 g x 1 mol C₂H₆ / mol C₂H₄ x 30 g/mol C₂H₆ = 24.4 g C₂H₆