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Answer :
The boiling point of the aqueous solution of 2.50 m [tex]Fe(NO_3)_3[/tex]is approximately 101.28 °C. So, the correct option nearest to it is B.
We can use the following equation to find the boiling point of an aqueous solution of [tex]Fe(NO_3)_3[/tex]:
Δ[tex]T_b[/tex] = [tex]K_b[/tex] * m
where:
[tex]K_b[/tex] is the molal boiling point elevation constant for water (0.512 °C/m) and [tex]T_b[/tex] is the boiling point elevation
m is the molality of the solute (2.50 m).
Inserting the values:
ΔTb = 0.512 °C/m * 2.50 m
ΔTb = 1.28 °C
The boiling point is calculated by adding the boiling point elevation to the 100 °C boiling point of pure water:
Boiling point = 100 °C + 1.28 °C
Boiling point = 101.28 °C
Hence, the boiling point of the aqueous solution of 2.50 m [tex]Fe(NO_3)_3[/tex]is approximately 101.28 °C.
So, the correct option nearest to it is B.
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