The boiling point of water is

Options

A. `0^(@)C`
B. `100^(@)C`
C. 373 K
D. (b) and (c)

Answer

To solve the question regarding the boiling point of water, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Boiling Point**:
The boiling point of a liquid is defined as the temperature at which its vapor pressure equals the atmospheric pressure surrounding it.

2. **Vapor Pressure**:
Vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid at a given temperature. When the vapor pressure of water equals the atmospheric pressure, water begins to boil.

3. **Normal Atmospheric Pressure**:
At sea level, the normal atmospheric pressure is approximately 76 mmHg (millimeters of mercury).

4. **Boiling Point of Water**:
Under normal atmospheric pressure (76 mmHg), water boils at 100 degrees Celsius (°C).

5. **Conversion to Kelvin**:
To convert Celsius to Kelvin, you add 273 to the Celsius temperature. Therefore, for water boiling at 100 °C:
\[ 100 °C + 273 = 373 \text{ K} \]

6. **Conclusion**:
The boiling point of water can be expressed in two different units:
- 100 degrees Celsius (°C)
- 373 Kelvin (K)

### Final Answer:
The boiling point of water is 100 degrees Celsius and 373 Kelvin.