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Berapakah titik didih dan titik beku larutan 0,1 mol dalam 500 gram air.

Berapakah titik didih dan titik beku larutan 0,1 mol begin mathsize 14px style Ba open parentheses N O subscript 3 close parentheses subscript 2 end style dalam 500 gram air. 
begin mathsize 14px style left parenthesis K subscript b space air space equals 0 comma 52 space degree C space m to the power of negative sign 1 end exponent space dan space K subscript f space air space equals space 1 comma 86 space degree C space m to the power of negative sign 1 end exponent right parenthesis end style 

  1. ... undefined 

  2. ... undefined 

Jawaban:

Larutan begin mathsize 14px style Ba open parentheses N O subscript 3 close parentheses subscript 2 end style termasuk dalam elektrolit kuat, sehingga dianggap terionisasi sempurna, i = 3

Titik didih larutannya,

 

begin mathsize 14px style space space space space space increment T subscript b double bond m middle dot K subscript b italic middle dot italic i T subscript b bond T subscript b degree equals mol subscript Ba open parentheses N O subscript 3 close parentheses subscript 2 end subscript cross times 1000 over m subscript air cross times K subscript b cross times italic i T subscript b minus sign 100 equals 0 comma 1 cross times 1000 over 500 cross times 0 comma 52 cross times 3 T subscript b minus sign 100 equals 0 comma 312 space space space space space space space space space space T subscript b equals 100 comma 312 space degree C end style 

 

Titik beku larutannya,


begin mathsize 14px style space space space space space increment T subscript f double bond m middle dot K subscript f italic middle dot italic i T subscript f degree minus sign T subscript f double bond mol subscript Ba open parentheses N O subscript 3 close parentheses subscript 2 end subscript cross times 1000 over m subscript air cross times K subscript f cross times italic i 0 minus sign T subscript f equals 0 comma 1 cross times 1000 over 500 cross times 1 comma 86 cross times 3 0 minus sign T subscript f equals 1 comma 116 space space space space space space space space space space T subscript f equals minus sign 1 comma 116 space degree C end style 


Jadi, titik didih dan titik beku larutan undefined masing-masing adalah begin mathsize 14px style 100 comma 312 space degree C end style dan Error converting from MathML to accessible text.undefined 

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