1,3-butadiene weighing 5.4 g was reacted in the presence of a catalyst with 4.48

| June 19, 2021 | education

1,3-butadiene weighing 5.4 g was reacted in the presence of a catalyst with 4.48 liters of hydrogen. Establish the formula of the hydrogenation product

First of all, 1,3-butadiene in the molecule contains two double bonds along which the hydrogenation process takes place.

But the formula for 1,3-butadiene is C4H6.

Well, now let’s write down the hydrogenation reaction of 1,3-butadiene.

C4H6 + 2H2 = C4H10.

Well, now let’s check, based on the conditions of the problem, whether we wrote down the formula for the final product correctly.

The molecular weight of C4H6 is 54 (g / mol).

But the main thing for us is to check how much hydrogen (H2) is required for this reaction, and if it coincides with the given conditions of the problem, then the final product, namely butane, will work out for us.

So, by condition, we have 0.1 mol C4H6 (5.4 g). Based on the reaction, we need 0.2 mol of hydrogen. And this is 22.4: 10 X 2 = 4.48 liters. so everything matches and we get butane with the formula C4H10.



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