The normal boiling point of water is ______.
- AOption (a)
373 K
- BOption (b)
371 K
- COption (c)
377 K
- DOption (d)
375 K
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Correct answer
373 K
Why this answer is correct
The correct answer is 373K.
Key Points
- The normal boiling point of a liquid is the temperature at which its vapor pressure is equal to the atmospheric pressure.
- For water, this temperature is 100 degrees Celsius or 373 Kelvin (K).
- The boiling point of water can vary with changes in atmospheric pressure, but the normal boiling point is a constant value.
Additional Information Boiling points of some compounds at atmospheric pressure 1 atm :
| Materails | Boiling point in degree Celcius |
|---|---|
| Ethanol | 78.37 |
| Methanol | 64.7 |
| Acetone | 56 |
| Alcohol | 78.37 |
| Nitrogen | -195.8 |
| Hydrgen | -252.9 |
| liquid Helium | -269 |