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The triple - point of water is a standar...

The triple - point of water is a standard fixed point in modern thermometry. Why ? What is wrong in taking the melting point of ice and the boiling point of water as standard fixed points (as was originally done in the Celsius scale) ?

Text Solution

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In modern thermometry triple point of water is `273.16K`.
Melting point of ice and boiling point of water are not new because they change in pressure.
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Knowledge Check

  • The melting point of ice is …..K and boiling point of water is …K.

    A
    255, 265
    B
    273,273
    C
    273, 373
    D
    273, 375

  • What is the boiling point of water in degree farenheit ?

    A
    210
    B
    212
    C
    373
    D
    none

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