A Solution Is Prepared by Dissolving 7

question 117

Multiple Choice

A solution is prepared by dissolving 7.00 g of glycerin (C₃H₈O₃) in 201 g of ethanol (C₂H₅OH) . The freezing point of the solution is ________°C. The freezing point of pure ethanol is -114.6 °C. The molal freezing point depression constant (K_f) for ethanol is 1.99 °C m^-1. The molar masses of glycerin and of ethanol are 92.1 g mol^-1 and 46.1 g mol^-1, respectively.

• A)-121.3
• B)0.752
• C)-107.9
• D)-113.8
• E)-115.4

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Definitions:

Chesapeake

A region in the United States centered around the Chesapeake Bay, known for its unique cultural heritage and history, including early colonial settlements.

New England

A geographical region in the northeastern corner of the United States, comprising six states and known for its colonial history, educational institutions, and distinct seasons.

Patriarchal Family Patterns

Social or cultural systems in which men hold primary power and predominate in roles of political leadership, moral authority, and control of property.

Pilgrims

Early settlers of the Plymouth Colony in present-day Massachusetts, who sought religious freedom and are celebrated in the United States during Thanksgiving.