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SheldonEinstein
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What will be the order of solubility of NaCl in \(H_2O,CH_3OH,and C_2H_5OH \)
 2 years ago
 2 years ago
SheldonEinstein Group Title
What will be the order of solubility of NaCl in \(H_2O,CH_3OH,and C_2H_5OH \)
 2 years ago
 2 years ago

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SheldonEinstein Group TitleBest ResponseYou've already chosen the best response.0
I can guess that it will be : \[S(H_2O) > S(CH_3OH) > S(C_2H_5OH)\] But how can we calculate it, by using the basic of "Force of attraction between particles?"
 2 years ago

SheldonEinstein Group TitleBest ResponseYou've already chosen the best response.0
If I am "correct" then the expression for the force of attraction between particles is : F = z+ze^2 / Dr^2
 2 years ago

Preetha Group TitleBest ResponseYou've already chosen the best response.1
NaCl dissolves in water because the polar water molecules are able to solvate the Na+ and CL ions. So the more polar the solvent is, the more it will be able to solvate the sodium and chloride ions. As you predicted CH3OH is more polar than ethanol. Hence the order you have predicted is correct.
 2 years ago

SheldonEinstein Group TitleBest ResponseYou've already chosen the best response.0
z+ and z are the charge of the ions.. D is dielectric constant. e is the charge of \(1\) electron. r is inter ionic distance.
 2 years ago

SheldonEinstein Group TitleBest ResponseYou've already chosen the best response.0
Oh! Thanks @Preetha ma'am . I thought something different. Here is what I did. (the first part is done above) As we know that when D increases, F decreases and lesser the F easier will be the break up of the lattice and hence more will be the solubility. ^ that is correct ma'am ?
 2 years ago

Preetha Group TitleBest ResponseYou've already chosen the best response.1
yes. Sounds right.
 2 years ago

SheldonEinstein Group TitleBest ResponseYou've already chosen the best response.0
Thanks ma'am .
 2 years ago
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