A 08838-G Sample of an Ionic Compound Containing Bromide Ions and and an Unknown

question 46

Multiple Choice

A 0.8838-g sample of an ionic compound containing bromide ions and an unknown metal cation is dissolved in water and treated with an excess of AgNO₃. If 1.573 g of a AgBr precipitate forms, what is the percent by mass of Br in the original compound?

• A) 62.13%
• B) 75.72%
• C) 56.19%
• D) 42.55%
• E) 37.87%

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Definitions:

Sphenoid

A complex bone at the base of the skull that helps form the eye socket, nose, and base of the brain casing.

Maxilla

One of a pair of bones forming the upper jaw, holding the upper teeth, and contributing to the formation of the orbit, nasal cavity, and palate.

Vertebral Column

The spine or backbone; a column of vertebrae in the back that protects the spinal cord and supports the body.

Lumbar

Refers to the lower part of the spine between the thoracic region and the sacrum.