At 10°C, Which Is More Concentrated-A Saturated Solution of Sodium

question 63

Multiple Choice

At 10°C, which is more concentrated-a saturated solution of sodium nitrate, NaN , or a saturated solution of sodium chloride? (See figure shown above )

• A)At 20°C a saturated solution of sodium nitrate, NaN , is more concentrated than a saturated solution of sodium chloride, NaCl.
• B)At 10°C a saturated solution of sodium chloride, NaCl, is more concentrated than a saturated solution of sodium nitrate, NaN .
• C)At 10°C a saturated solution of sodium nitrate, NaN , is more concentrated than a saturated solution of sodium chloride, NaCl.
• D)At 25°C a saturated solution of sodium nitrate, NaN , is more concentrated than a saturated solution of sodium chloride, NaCl.

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Definitions:

Active Transport

The movement of molecules across a cell membrane from a region of lower concentration to one of higher concentration, requiring energy.

Cell Membrane

The structure that surrounds and encloses a cell.

Lipids

A group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins (such as vitamins A, D, E, and K), monoglycerides, diglycerides, triglycerides, phospholipids, and others.

Carbohydrates

Organic compounds occurring in foods and living tissues, including sugars, starch, and cellulose, which provide energy or contribute to structure.