Consider the Following Gas Phase Reaction at 25°C

question 70

Multiple Choice

Consider the following gas phase reaction at 25°C. N₂(g) + C₂H₂(g) ⇌ 2 HCN(g)
600 mol N₂(g) and 1.750 mol C₂H₂(g) are placed in a 1.000 L vessel and the mixture is allowed to react. At equilibrium, there are 1.587 mol N₂(g) in the mixture. What is Kc for this reaction at 25 °C?

• A) 9.8 × 10^-4
• B) 9.4 × 10^-3
• C) 2.5 × 10^-4
• D) 4.7 × 10^-3
• E) 6.7 × 10^-5

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Definitions:

Interference Fits

A type of fit in mechanical engineering where two parts are so tightly fit together that they deform each other to stay in place.

Locational Transition Fit

A type of fit defined by tolerances that allows for a limited amount of either interference or clearance between assembled parts.

Clearance

The intentional space or gap between two mating parts to ensure there is no unwanted friction or binding during operation.

Interference Fit

A method of fitting two parts together using a dimension in which the size of the hole is smaller than the size of the shaft to be inserted, creating a high-pressure seal.