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Hitung tekanan osmosis larutan bila ke dalam 500 mL larutan dimasukkan 6 gram urea (Mr = 60) dan 11,1 gram CaCl 2 (Mr = 111) dan 5,85 gram NaCl (Mr = 58,5) pada suhu 27 °C (Kbair = 0,52, Kf air = 1,86)

Hitung tekanan osmosis larutan bila ke dalam 500 mL larutan dimasukkan 6 gram urea (Mr = 60) dan 11,1 gram CaCl2 (Mr = 111) dan 5,85 gram NaCl (Mr = 58,5) pada suhu 27 °C (Kb air = 0,52, Kf air = 1,86)

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Pembahasan

HItung massa masing masing larutan Tekanan osmotik larutan Maka, tekanan osmotik larutan adalah 29,52 atm

table attributes columnalign right center left columnspacing 0px end attributes row cell pi subscript Larutan end cell equals cell pi subscript urea and pi subscript Ca Cl subscript 2 end subscript and pi subscript NaCl end cell row cell pi subscript Larutan end cell equals cell M subscript urea RT and M subscript Ca Cl subscript 2 end subscript RTi subscript Ca Cl subscript 2 end subscript and M subscript NaCl RTi subscript NaCl end cell row blank equals cell RT left parenthesis M subscript urea and M subscript Ca Cl subscript 2 end subscript i subscript Ca Cl subscript 2 end subscript and M subscript NaCl i subscript NaCl right parenthesis end cell row blank equals cell 0 comma 082 middle dot left parenthesis 27 plus 273 right parenthesis left parenthesis M subscript urea and M subscript Ca Cl subscript 2 end subscript i subscript Ca Cl subscript 2 end subscript and M subscript NaCl i subscript NaCl right parenthesis end cell row blank equals cell 24 comma 6 left parenthesis M subscript urea and M subscript Ca Cl subscript 2 end subscript i subscript Ca Cl subscript 2 end subscript and M subscript NaCl i subscript NaCl right parenthesis end cell end table 

HItung massa masing masing larutan

table attributes columnalign right center left columnspacing 0px end attributes row cell M subscript urea end cell equals cell massa over Mr cross times 1000 over pel end cell row blank equals cell 6 over 60 cross times 1000 over 500 end cell row blank equals cell 0 comma 2 end cell row blank blank blank row cell M subscript Ca Cl subscript 2 end subscript end cell equals cell massa over Mr cross times 1000 over pel end cell row blank equals cell fraction numerator 11 comma 1 over denominator 111 end fraction cross times 1000 over 500 end cell row blank equals cell 0 comma 2 end cell row blank blank blank row cell M subscript NaCl end cell equals cell massa over Mr cross times 1000 over pel end cell row blank equals cell fraction numerator 5 comma 85 over denominator 58 comma 5 end fraction cross times 1000 over 500 end cell row blank equals cell 0 comma 2 end cell end table 

Tekanan osmotik larutan

 table attributes columnalign right center left columnspacing 0px end attributes row cell pi subscript Larutan end cell equals cell 24 comma 6 left parenthesis M subscript urea and M subscript Ca Cl subscript 2 end subscript i subscript Ca Cl subscript 2 end subscript and M subscript NaCl i subscript NaCl right parenthesis end cell row blank equals cell 24 comma 6 left parenthesis 0 comma 2 plus 0 comma 2 left parenthesis 3 right parenthesis plus 0 comma 2 left parenthesis 2 right parenthesis right parenthesis end cell row blank equals cell 29 comma 52 space atm end cell end table 

Maka, tekanan osmotik larutan adalah 29,52 atm

 

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