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

question 62

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 (S₈,256.5 g/mol) in 1250 g of CCl₄? (For CCl₄,Kb = 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)85.7°C

---

Definitions:

Apparent Movement

The perception of movement in a stationary object due to rapid sequential presentation of images or due to the context in which the object is viewed.

Visual Field

The total area in which objects can be seen in the peripheral vision while the eye focuses on a central point.

Sequential Intervals

Time periods or sequences that follow one another in a specific, ordered manner.

Apparent Movement

The perception of movement in a static image or between two or more images viewed in quick succession.