Hydroquinone Is an Antioxidant That Is Also Used as a Photographic

question 25

Multiple Choice

Hydroquinone is an antioxidant that is also used as a photographic reducer and developer.The normal boiling point of hydroquinone is 310°C.Calculate the pressure at which hydroquinone will boil at 200°C given that its ΔH_vap is 73.38 kJ/mol.

• A)1.210 × 10^-4 mm Hg
• B)1.35 mm Hg
• C)22.5 mm Hg
• D)757 mm Hg

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Definitions:

Unit Elasticity

A situation where a change in the price of a product leads to a proportional change in the quantity demanded or supplied.

Demand

The quantity of a good or service that consumers are willing and able to purchase at a given price over a specified period of time.

Unit Elasticity

A circumstance where the percentage variation in the quantity that is either demanded or supplied matches the percentage variation in its price.

Demand

The amount of a product or service that shoppers are ready and capable of buying at different price levels within a specific period.