Organic Chemistry 2: Advanced Hydrocarbon Formation

Chemistry Level 4

A mixture of butadiene and ethyne is treated first with osmium tetroxide and then with sodium periodate, with both reagents being in excess ( X s Xs ).

Your answer will be a three digit number that satisfies the following conditions:

(a) : The first digit will be the number of oxygens in the final product(s).

(b) : The second digit will be the number of carbons in the final product(s).

(c) : The third digit will be the number of hydrogens in the final product(s).

For example, If the final product is C X 6 H X 8 O X 1 \ce{C_6H_8O_1} , then your answer will be 168.


David's Organic Chemistry Set

David's Physical Chemistry Set


The answer is 234.

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1 solution

David Hontz
Jul 2, 2016

The final product is propadial \text{propadial} ( C 3 H 4 O 2 C_3H_4O_2 ) Answer = 234 \text{Answer} = \boxed{234}

Exactly :)

Aniket Sanghi - 4 years, 11 months ago

Nice questions !! KEEP ON posting:)

Gauri shankar Mishra - 4 years, 11 months ago

nice one !

aryan goyat - 4 years, 11 months ago

@David Hontz Is the reaction between butadiene and ethyne spontaneous?? Cause, in the solution provided, they are made to react first.

Ashu Dablo - 4 years, 11 months ago

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Energetically, 3-pi bonds are broken in the reactants and formation of the 2 sigma-bonds + 1 pi-bond in the product has a negative enthalpy value, therefore the reaction is exothermic and spontaneous. This particular reaction is called D i e l s A l d e r R e a c t i o n \ce{Diels-Alder~Reaction} , with an alkyne being used in place of an alkene, and is enthalpically driven. To answer your question; yes, butadiene and ethyne do react spontaneously, which makes these kinds of reactions very fun to work with!

David Hontz - 4 years, 11 months ago

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Thank you!

Ashu Dablo - 4 years, 11 months ago

Nice one dude

Satyam Tripathi - 4 years, 6 months ago

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Thanks man. Compliments always appreciated.

David Hontz - 4 years, 5 months ago

Diels alder reaction needs heating

Naveen Rock - 3 years, 3 months ago

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