Glacial acetic acid has a melting point of 16.0 ° C and enthalpy of fusion of 11.7 kJ / mol . (a) Calculate the cryoscopic constant of glacial acetic acid. (b) What is the freezing point of a solution of 27.6 g of I 2 dissolved in 73.3 g of HC 2 H 3 O 2 ?
Glacial acetic acid has a melting point of 16.0 ° C and enthalpy of fusion of 11.7 kJ / mol . (a) Calculate the cryoscopic constant of glacial acetic acid. (b) What is the freezing point of a solution of 27.6 g of I 2 dissolved in 73.3 g of HC 2 H 3 O 2 ?
Glacial acetic acid has a melting point of
16.0
°
C
and enthalpy of fusion of
11.7
kJ
/
mol
. (a) Calculate the cryoscopic constant of glacial acetic acid. (b) What is the freezing point of a solution of
27.6
g
of
I
2
dissolved in
73.3
g
of
HC
2
H
3
O
2
?
If we assume a system with an anodic overpotential, the variation of n as a function
of current density:
1. at low fields is linear 2. at higher fields, it follows Tafel's law
Obtain the range of current densities for which the overpotential has the same value
when calculated for 1 and 2 cases (maximum relative difference of 5% compared to
the behavior for higher fields).
To which overpotential range does this correspond?
Data: i = 1.5 mA cm², T = 300°C, B = 0.64, R = 8.314 J K1 mol-1 and F = 96485 C mol-1.
Answer by equation please
Some of the theories used to describe interface structure can be distinguished by:1. the measured potential difference.2. the distribution of ions in solution.3. the calculation of charge density.4. the external Helmoltz plane.
Chapter 7 Solutions
Student Solutions Manual for Ball's Physical Chemistry, 2nd
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