A Buffer Solution Is Prepared by Dissolving 27

question 32

Multiple Choice

A buffer solution is prepared by dissolving 27.22 g of KH₂PO₄ and 3.37 g of KOH in enough water to make 0.100 L of solution.What is the pH of the H₂PO₄^-/HPO₄^2- buffer if the K_a2 = 6.2 × 10^-8?

• A)6.84
• B)7.00
• C)7.21
• D)7.84

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Definitions:

System Supply Tank

A reservoir or tank that holds fluid or fuel integral to the operation of a system, ensuring there is a sufficient supply for its functioning.

Compressor Unloader Circuit

A system within an air compressor that reduces load and pressure by allowing compressed air to bypass during start-up or when the desired pressure is reached.

Compressor Drive

Refers to the mechanism that transfers power from an engine or electric motor to a compressor, enabling it to pressurize air or refrigerant.

Intake Valves

Mechanical components in an engine that open to allow the air/fuel mixture into the combustion chambers during the intake stroke.