Carbon Tetrachloride,once Widely Used in Fire Extinguishers and as a Dry

question 60

Multiple Choice

Carbon tetrachloride,once widely used in fire extinguishers and as a dry cleaning fluid,has been found to cause liver damage to those exposed to its vapors over long periods of time.What is the boiling point of a solution prepared by dissolving 375 g of sulfur (S₈,
= 256.5g/mol) in 1250 g of CCl₄? K_b = 5.05°C/m,boiling point of pure CCl₄ = 76.7°C?

• A)70.8°C
• B)75.2°C
• C)78.2°C
• D)82.6°C
• E)>85°C

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Definitions:

Frequency Distribution

This is a tabulation of the occurrences of each unique value in a dataset, often visualized in histograms or bar charts.

Mean

The average of a set of numbers, calculated by adding them together and then dividing by the number of values.

Frequency Distribution

A summary of how often each different value occurs in a dataset, often represented in a table or graph.

Balancing Point

A point at which a system, object, or decision is in a state of equilibrium or balance, often used metaphorically to refer to fair or stable situations.