Question

How is of delta Tf and delta Tb related to molecular mass of solute

Answer 1

The answer is in the image. Please comment if unclear.

Answer 2

Answer:

Concept:

The mass of a molecule is determined in deltas and is called molecular mass (m). Different compounds of the same material may have different molecular weights because they include different isotopes of the same element. A unitless ratio of a molecule's mass to the unitary atomic mass unit, as established by IUPAC, is relative molecular mass. The high molecular and relative molecular weights are not the same as the molar mass, but they are linked. The molar mass is stated in g/mol and is defined as the matter in a given component divided by the amount of that substance. When dealing with macroscopic quantities of a substance, the molar mass is generally the most relevant figure.

Given:

How is of ΔTf and ΔTb related to molecular mass of solute

Find:

find the answer for the given question ΔTf and ΔTb related to molecular mass of solute

Answer:

The molality of the solution can be used to derive the relationship between ΔTb and the molar mass of the solute. The molar mass of a solute is

inversely related to its molality.

Δ$T_{b}$ and Δ$T_{f}$ are both inverse proportion to the solute's molar mass.

Δ$T_{b} =K_{b} m$

Δ$T_{b} =K_{b} *\frac{weight .of.solute/molecular.mass of solute}{weight.of.solvent in kg}$

Δ$T_{b} =K_{b} =\frac{weight}{m.w *weight.of.solvent}$

$m.w=weight*K_{b} /$Δ$Tb*weight of solvent in .kg$

Δ$T_{f} =K_{f} *m$

$molecular .weight. of solute=weight .of .solute *K_{f} /$

Δ$T_{f} *weight .of .solvent. in kg$

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