In the Following Titration Curve, What Does the Inflection Point

question 20

Multiple Choice

In the following titration curve, what does the inflection point represent?

• A)pH of solution equals pK_a of weak acid
• B)concentration of weak acid and conjugate base are equal
• C)the pH where the solution would function most effectively as a buffer
• D)the weak acid is 50% protonated, 50% deprotonated
• E)all of the above

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Definitions:

Direct Materials Quantity Variance

A measure used in cost accounting to indicate the variance between the actual quantity of materials used and the standard quantity expected to be used in production.

Standard Material Requirement

The predetermined amount of materials specified for the production of a single unit of product, often used in budgeting and controlling costs.

Standard Cost

A predetermined or budgeted cost of manufacturing a product or performing a service, used as a benchmark to measure performance.

Direct Materials Quantity Variance

The difference between the actual quantity of direct materials used in production and the standard quantity expected, multiplied by the standard cost per unit.