Question

which formula is used to calculate from factor [Kf]
a) Kf = effective value/average value
b) kf= average value/ effective value
c) kf= effective value/maximum value
d) kf= average value/maximum value​

Answer 1

Step-by-step explanation:

A... dT = Kf x m x i.. i is van't hoff factor. # ions solute dissociates into. i = 2 for NaCl and i = 1 for ethylene glycol

3. B.. dT = Kf x m x i.. kf = dT / (m x i).. if your using the value of 1 for i for NaCl instead of 2, then Kf will be 2x's too large. so you need to divide by 2.

4. B.. the molality ( moles solute / kg solvent) would be too high and therefore dT would be too high. ie the measured temp would be too high.

Answer 2

Step-by-step explanation:

A... dT = Kf x m x i.. i is van't hoff factor. # ions solute dissociates into. i = 2 for NaCl and i = 1 for ethylene glycol

3. B.. dT = Kf x m x i.. kf = dT / (m x i).. if your using the value of 1 for i for NaCl instead of 2, then Kf will be 2x's too large. so you need to divide by 2.

4. B.. the molality ( moles solute / kg solvent) would be too high and therefore dT would be too high. ie the measured temp would be too high.

1) What is the formula for form factor(Kf)? |

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