At 25°C, the Equilibrium Constant K_c for the Reaction 2A(g)

question 84

Multiple Choice

At 25°C, the equilibrium constant K_c for the reaction 2A(g) ⇄ B(g) + C(g)
Is 0.035. A mixture of 8.00 moles of B and 12.00 moles of C in a 20.0 L container is allowed to come to equilibrium. What is the equilibrium concentration of A?

• A)< 0.100 M
• B)0.339 M
• C)0.678 M
• D)6.78 M
• E)13.56 M

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Definitions:

NBS

N-Bromosuccinimide, a chemical reagent used in the bromination of alkenes, alcohols, and for the synthesis of various brominated compounds.

π Molecular Orbital

A molecular orbital formed by the side-to-side overlap of atomic orbitals, commonly p orbitals, leading to the formation of a bonded region of electron density above and below the plane of the atomic nuclei.

Allyl Radical

A molecular entity consisting of an alkene with a CH2-CH=CH2 structure where a hydrogen atom is removed, leaving an unpaired electron.

Major Organic Product

The primary product of a chemical reaction that has the highest yield, relative to other potential products.