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Which of the following is a colourless liquid whose formula is CHCl тВГ which evaporates rapidly and turns into gas?
Ethanol
Ammonia
Chloroform
Acetone
Chloroform
Chloroform (CHCl3тАЛ) is a dense, volatile, colourless liquid that exhibits a sweet, characteristic odour. Due to its high vapour pressure, it evaporates rapidly at room temperature, transitioning easily into the gaseous state.
Chloroform (CHCl3тАЛ) is a dense, volatile, colourless liquid that exhibits a sweet, characteristic odour. Due to its high vapour pressure, it evaporates rapidly at room temperature, transitioning easily into the gaseous state.
Think of chloroform like rubbing alcohol on your skin; because it evaporates so quickly, it steals heat from the surface it touches, which is why it often feels cold before it completely vanishes into the air.
T-R-I-C: Tri-chloro-methane, Rapidly evaporates, Irritant, Colourless.
CHCl3тАЛ тАФ The chemical formula for Trichloromethane (Chloroform)
C2тАЛH5тАЛOH тАФ The chemical formula for Ethanol
The rapid evaporation of chloroform is governed by its relatively low boiling point of approximately 61.2┬░C and weak intermolecular London dispersion forces. As a volatile organic compound, it readily absorbs ambient thermal energy to overcome these intermolecular attractions, facilitating the phase change from liquid to vapour.
Chloroform is a haloalkane historically used as an anaesthetic.
It is photosensitive and reacts with atmospheric oxygen to form the highly toxic gas phosgene (COCl2тАЛ).
It must be stored in dark-coloured bottles to prevent photochemical decomposition.
Useful as a solvent in organic synthesis and laboratory procedures.
Potentially toxic to the liver and kidneys upon chronic exposure.
Forms toxic phosgene gas upon exposure to light and air.
Laboratory solvent for alkaloids and fats
Precursor in the production of refrigerants
Option A (Ethanol) is a flammable alcohol used as a fuel and solvent, but it does not evaporate as aggressively as chloroform.
Option B (Ammonia) is typically a gas at room temperature under standard pressure.
Option D (Acetone) is a volatile, flammable liquid with a pungent smell, distinct from the chloroform formula CHCl3тАЛ.
C is correct тАФ Chloroform (CHCl3тАЛ) is the specific chemical compound described due to its formula and rapid evaporation characteristics.
Always remember that chloroform stored in the light can oxidize to phosgene (COCl2тАЛ); this is a classic high-yield question in competitive chemistry exams regarding stability and safety.
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