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Which one of the following is not true at room temperature and pressure
  • a)
    P4O10 is a white solid
  • b)
    SO2 is a coloureless gas
  • c)
    SO3 is a colourless gas
  • d)
    NO2 is a brown gas
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which one of the following is not true at room temperature and pressur...
SO3 is a colourless gas, crystalline transparent solid at room temperature.
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Which one of the following is not true at room temperature and pressur...
Explanation:

SO3 is a colourless gas:
- Sulfur trioxide (SO3) is actually not a colorless gas at room temperature and pressure.
- SO3 is a colorless to pale yellow liquid that fumes in air due to reaction with moisture.
- The substance sublimes to form a white crystalline solid at temperatures below its melting point.
- It is highly reactive and tends to react with water vapor in the air to form sulfuric acid, which gives it a characteristic white appearance.
Therefore, the statement "SO3 is a colorless gas" is not true at room temperature and pressure.
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Which one of the following is not true at room temperature and pressurea)P4O10 is a white solidb)SO2 is a coloureless gasc)SO3 is a colourless gasd)NO2 is a brown gasCorrect answer is option 'C'. Can you explain this answer?
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