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Question

The boiling points of diethyl ether, acetone and n-butyl alcohol are 35°C,56°Cand118°C respectively. Which one of the following correctly represents their boiling points in the kelvin scale?


A

306K,329K,391K

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B

308K,329K,392K

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C

308K,329K,391K

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D

329K,392K,308K

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Solution

The correct option is C

308K,329K,391K


Explanation for the correct option:

Option (C):308K,329K,391K

  • The temperature measured on the Celsius scale is known as the Celsius temperature.
  • Whereas the Kelvin scale is defined as the absolute scale which exists as the temperature which is colder than the freezing point of ice,0oCwhich is represented on the Celsius scale.
  • The formula for converting the Celsius temperature into Kelvin is given:
    K=oC+273
  • So the temperature for Diethyl ether in Kelvin will be =35oC+273=308K
  • Also, the temperature for Acetone in Kelvin will be =56oC+273=329K
  • Also, the temperature for n-Butyl alcohol in Kelvin will be =118oC+273=391K

Hence, the given option, which represents their boiling points in the kelvin scale is 308K,329K,391K.


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