What Is the PH of a Solution Prepared by Dissolving $\times$

question 26

Multiple Choice

What is the pH of a solution prepared by dissolving 4.50 g sodium dihydrogen borate (83.8 g/mol) in 650 mL of a 0.0725 M boric acid? The K_a of boric acid is 5.4 $\times$ 10^-10.Ignore any volume change.

• A)9.21
• B)9.32
• C)9.27
• D)9.40
• E)9.14

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Definitions:

Input

Resources used in the production process to create goods or services.

Inputs

Resources such as labor, materials, and capital used in the process of production.

Output

The quantity of goods or services produced by a firm, industry, or economic system.

Diminishing

A principle often observed in economics where additional units of a variable factor increase total output at a decreasing rate.