A Beaker Contains 100 ML of NaOH Solution at PH

question 70

Multiple Choice

A beaker contains 100 mL of NaOH solution at pH = 13. A technician carefully pours into the beaker 10 mL of HCl at pH = 1. Which of the following statements correctly describes the results of this mixing?

• A) The concentration of Na⁺ ion rises.
• B) The concentration of Cl⁻ ion will be 0.1 M.
• C) The concentration of undissociated H₂O molecules remains unchanged.
• D) The pH of the beaker's contents will be neutral.
• E) The pH of the beaker's contents falls.

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Definitions:

Depletion Expense

The allocation of the cost of natural resources, such as minerals, oil, or timber, over their productive life.

Salvage Value

Salvage value is the estimated residual value of an asset at the end of its useful life, determining how much it can be sold for or disposed of.

Double-Declining-Balance Depreciation

An accelerated depreciation method that doubles the depreciation rate of an asset, causing it to lose value quicker than under traditional linear depreciation methods.

Accumulated Depreciation

The total amount of depreciation expense that has been recorded for an asset since it was put into use.