Polymers with Ionic Functional Groups Have Been Developed for Removal

question 12

Multiple Choice

Polymers with ionic functional groups have been developed for removal of ions from water. One example is Amberlite. One form of Amberlite has the structure shown below, where the -SO₃H groups act like a weak acid. What type of ions will this polymer attract?

• A) cations
• B) anions
• C) all ions
• D) impossible to tell
• E) none, since the polymer is neutral

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Definitions:

Variable Overhead

Costs that fluctuate with changes in production level or activity, such as utilities or materials, within the manufacturing overhead category.

Rate Variance

It is the difference between the actual rate paid for an item or service and the expected (standard or budgeted) rate, often used in budgeting and cost management.

Predetermined Overhead Rate

A rate calculated before a period begins, used to assign overhead costs to products or job orders based on a certain activity, such as machine hours or labor hours.

Variable Component

The portion of cost or expense that varies directly with changes in output or activity level.