Question

Which aqueous solution freezes the lowest temperature?
a)0.30 m C2H5OH B) 025 M KNO3

C) 0.20 M CaBr2 d) 0.10 m FeCl3


when I calculate the molarity for all of them, it turns out the answer is B but I'm nit sure.

please help

Answer 1

are you sure b) and c) are given in molarity (capital M)

Answer 2

B) 0.25 M

Answer 3

NO small m

Answer 4

okay, so next time copy the question correctly. capital M is molarity and lowercase m is molality. they're different.

Use the formula \(\Delta T=i*m*Kb\)

Kb is constant, so focus on the value for i, the van't hoff constant, and the molality.

I can tell you it's not b)

Answer 5

thank you so much
I did not know they are different.
good information

Answer 6

no problem, i hope you can find the answer to your question now

Answer 7

IS IT C right

Answer 8

\(\sf \huge \checkmark\)

Answer 9

^ ^