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Calculate the boiling point of a 1.75 m Mg(NO3)2 aqueous solution.

Question

Calculate the boiling point of a 1.75 m Mg(NO3)2 aqueous solution.

check_circleAnswer
Step 1

The boiling point elevation is given by

ATiKxb
is the van't Hoff factor;
K is the ebullioscopic constant of the solvent
bis the molality of the solution
AT the poiling point elevation - defined as T-T
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ATiKxb is the van't Hoff factor; K is the ebullioscopic constant of the solvent bis the molality of the solution AT the poiling point elevation - defined as T-T

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Step 2

Van’t hoff factor i for magnesium nitrate is three because for one mole of it gives thr...

The ebullioscopic constant of water is equal to 0.512°C kg mol1
AT 3x0.512°Ckg mol x1.75 motes kg-2.79°C
AT T-T
T-T9 tAT
T100°C+2.79°C=102.79°C
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The ebullioscopic constant of water is equal to 0.512°C kg mol1 AT 3x0.512°Ckg mol x1.75 motes kg-2.79°C AT T-T T-T9 tAT T100°C+2.79°C=102.79°C

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