A Solution Is Prepared by Dissolving 0

question 61

Multiple Choice

A solution is prepared by dissolving 0.23 mol of nitrous acid and 0.27 mol of sodium nitrite in water sufficient to yield 1.00 L of solution. The addition of 0.05 mol of HCl to this buffer solution causes the pH to drop slightly. The pH does not decrease drastically because the HCl reacts with the ________ present in the buffer solution. The K_a of nitrous acid is 1.36 × 10^-3.

• A)H₂O
• B)H₃O⁺
• C)nitrite ion
• D)nitrous acid
• E)This is a buffer solution: the pH does not change at all upon addition of acid or base.

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Definitions:

Inventory Investment

The purchase of goods and materials for the purpose of storing them for future sale or use in production.

Level of Inventory

Indicates the quantity of goods or materials a company has in stock at a given time, a critical factor in supply chain and operations management.

Disposable Income

The amount of income left to an individual after taxes have been paid, available for spending and saving.

Control

In an experiment or study, the standard to which comparisons are made; in management, the process of directing and regulating processes, systems, or organizations.