The Reaction That Occurs in a Breathalyzer, a Device Used

question 54

Multiple Choice

The reaction that occurs in a Breathalyzer, a device used to determine the alcohol level in a person's bloodstream, is given below. If the rate of appearance of Cr₂(SO₄) ₃ is 1.64 mol min^-1 at a particular moment, what is the rate of disappearance of C₂H₆O at that moment? 2K₂Cr₂O₇ + 8H₂SO₄ + 3C₂H₆O → 2Cr₂(SO₄) ₃ + 2K₂SO₄ + 11H₂O

• A) 0. 547 mol min^-1
• B) 1.09 mol min^-1
• C) 2.46 mol min^-1
• D) 4.92 mol min^-1

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Definitions:

Market Supply Curve

A graphical representation showing the total quantity of a good or service that suppliers are willing and able to sell at different prices.

Producer Surplus

The difference between the amount that producers are willing and able to sell a good for and the actual amount they receive in the market.

Economic Rent

Income derived from the possession of a unique resource, exceeding that which is needed to keep the resource in its current employment.

Economic Profit

The profit from producing goods and services while considering both explicit and implicit costs, including opportunity costs.