Determine the boiling point of 1M solution of sugar,glucose,sodium chloride,barium chloride,aluminium chloride
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The solvent is not specified. I suppose it is water.
Elevation in boiling point is given by Clausius-Clapeyron relation and Raoult's law combined together. That is :
![\Delta T_b= K_b\ b_{solute}\ i\\ \Delta T_b= K_b\ b_{solute}\ i\\](https://tex.z-dn.net/?f=%5CDelta+T_b%3D+K_b%5C+b_%7Bsolute%7D%5C+i%5C%5C)
Where the Ebullioscopic Constant of solvent is K_b
![K_b=\frac{R\ T_b^2 M}{\Delta H_v}\\\\\Delta H_v=Latent\ heat\ of\ vaporization.\\T_b=Boiling\ point.\\M=Molality\\R=Universal\ Gas\ Constant K_b=\frac{R\ T_b^2 M}{\Delta H_v}\\\\\Delta H_v=Latent\ heat\ of\ vaporization.\\T_b=Boiling\ point.\\M=Molality\\R=Universal\ Gas\ Constant](https://tex.z-dn.net/?f=K_b%3D%5Cfrac%7BR%5C+T_b%5E2+M%7D%7B%5CDelta+H_v%7D%5C%5C%5C%5C%5CDelta+H_v%3DLatent%5C+heat%5C+of%5C+vaporization.%5C%5CT_b%3DBoiling%5C+point.%5C%5CM%3DMolality%5C%5CR%3DUniversal%5C+Gas%5C+Constant)
For water K_b = 0.512 °C/Molal
b_solute = Molality of solute = 1 M given
i = number of particles per molecule of solute after dissociation into ions
i = 1 for Glucose and Sugar , as they do not dissociate in water as ions
= 1.9 for Na Cl or 2 theoretically
= 3 for Ba Cl2 theoretically
= 4 for Al Cl3 theoretically.
So Elevations in boiling points are :
= 0.512 * 1 * 1 = 0.512° C for Sugar and Glucose
= 0.512 * 1 * 2 = 1.024 °C for Salt theoretically
= 0.512 * 1 * 3 = 1.536 °C for Barium Chloride
= 0.512 * 1 * 4 = 2.048°C for Aluminum Chloride
Elevation in boiling point is given by Clausius-Clapeyron relation and Raoult's law combined together. That is :
Where the Ebullioscopic Constant of solvent is K_b
For water K_b = 0.512 °C/Molal
b_solute = Molality of solute = 1 M given
i = number of particles per molecule of solute after dissociation into ions
i = 1 for Glucose and Sugar , as they do not dissociate in water as ions
= 1.9 for Na Cl or 2 theoretically
= 3 for Ba Cl2 theoretically
= 4 for Al Cl3 theoretically.
So Elevations in boiling points are :
= 0.512 * 1 * 1 = 0.512° C for Sugar and Glucose
= 0.512 * 1 * 2 = 1.024 °C for Salt theoretically
= 0.512 * 1 * 3 = 1.536 °C for Barium Chloride
= 0.512 * 1 * 4 = 2.048°C for Aluminum Chloride
kvnmurty:
clik on thanks. select best ans.
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