Question

2. For each solvent, indicate if it is miscible with each other solvent. If it is miscible, put an "M" in the box If it is not miscible, put and "X" in the box. methylene chloride diethyl ether acetone chloroform ethyl acetate water methylene chloride ethyl acetate diethyl ether chloroform 3. Brine (aqueous NaCl solution) is often used in extraction procedures. The concentration of a saturated brine solution is 358 g of NaCl in 1.00 kg of water giving a total volume of 1.00 L. Calculate the molarity and density of saturated brine. molarity (molL): Work density (g/mL):

Answer 1

1- The mixing of any to substance follow the rule of Like dissolve like rule. i.e If both the compounds are polar or both of them are non-polar then they are miscible. On the other hand if one of them is polar and another non-polar, then they are not miscible.

Now based on the above concept

	Acetone (H3C-CO-CH3) = Polar	Chloroform (CHCl3) = Almost non-polar	Diethyl ether (H5C2-O-C2H5) =Non- Polar	Ethyl acetate (H3C-CO-O-C2H5) = Polar	Methylene chloride (CH2Cl2) = polar
Water (H-O-H) = Polar	Miscible	Imiscible	Imiscible	less miscible	immiscible- Because the H-atom of CH2Cl2 barely forms H-bond with water
Methylene chloride (CH2Cl2) = Polar	Miscible	Imiscible	Imiscible	less miscible
Ethyl acetate (H3C-CO-O-C2H5) = Polar	Miscible	Miscible- Because chloroform is better soluble in organic solvents	Imiscible
Diethyl ether (H5C2-O-C2H5) = Non-polar	Imiscible	Miscible
Chloroform (CHCl3) = Almost non-polar	Imiscible