Sunday
April 20, 2014

Homework Help: chemistry

Posted by Anonymous on Wednesday, May 5, 2010 at 9:14pm.

dimethylglyoxime is used as a reagent in qualitative analysis to precipitate the nickel(II) ion. a solution is made by dissolving 57.0 grams of DMG in 430.0 g of ethanol.
(a) what is the mole fraction of DMG in this solution?
(b) what is the molality of this solution?
(c) what is the vapor pressure over the solution at ethanol's normal boiling point, 78.4 degrees Celsius?
(d) what is the boiling point of this solution (DMG does not dissociate)? Kb (ethanol) = +1.22 degrees celsius/m

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

chemistry - what concentration of hydroxide ion ust be exceeded in a .01M ...
chemistry - An aqueous solution is made by dissolving 15.6 grams of nickel ...
Chemistry help please! - -Suppose K= 4.5x10^-3 at a certain temperature for the ...
Chemistry - How many grams of nickel (II) chloride must be added to 1.50 L of a ...
chem - A solution of ethanol (C2H5OH) in water is prepared by dissolving 57.0 mL...
Chemistry - In the qualitative analysis scheme, what qualitative analysis ...
CHEMISTRY - What is the reagent responsible for the formation of H2S in the ...
chemistry - what type of reaction is Nickel (II) ion and iron (III) ion and ...
chemistry - A galvanic cell consists of an electrode composed of nickel in a 1.0...
chemistry - A galvanic cell consists of an electrode composed of nickel in a 1.0...

Search
Members