How much acetamide, in grams, was dissolved to yield the solution?

Question

A solution was prepared by dissolving some acetamide, CH CONH2, in 65.0 g of pure water. The boiling point of the solution at 1 atm was 100.208 °C. How much acetamide, in grams, was dissolved to yield the solution. (0.512°C - Kb of H20)

Answer 1

Hi Isidra C.,

You have the boiling point elevation constant, and the boiling point elevation. With that, you can easily get the molality value. But it's in units of moles solute: kg solvent (water, here). And you will have trouble when you attempt to convert to grams, because you have the formula for acetamide wrong. -- It's CH₃CONH₂ . Just sayin'.

--Cheers, --Mr. d.