You Want to Maintain PH = 7

question 25

Multiple Choice

You want to maintain pH = 7.0 for an enzyme-catalyzed reaction that will produce hydrogen ions along with the desired product.At equal concentrations,which weak acid,if any,will serve as the better buffer for the reaction: Acid A,with pKa = 6.5 or Acid B,with pKa = 7.5?

• A)Acid A
• B)Water is as good as either of the acids available.
• C)Acid B
• D)Both are equally effective.

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Definitions:

Diseconomies of Scale

The phenomenon where, as a firm expands, its costs start increasing per unit of output, usually due to inefficiencies and management challenges that arise with size.

Diminishing Returns

A principle stating that as investment in a particular area increases, the rate of profit from that investment, after a certain point, cannot continue to increase and may decrease.

Natural Monopoly

A market structure where a single provider is more efficient in supplying the entire market with a product or service, due to high fixed or startup costs.