Consider the system 4NH 3 ( g ) + 3 O 2 ( g ) ⇌ 2 N 2 ( g ) + 6 H 2 O ( l ) Δ H = − 1530.4 kJ (a) How will the amount of ammonia at equilibrium be affected by 1. removing O 2 ( g )? 2. adding N 2 ( g )? 3. adding water? 4. expanding the container at constant pressure? 5. increasing the temperature? (b) Which of the above factors will increase the value of K ? Which will decrease it?
Consider the system 4NH 3 ( g ) + 3 O 2 ( g ) ⇌ 2 N 2 ( g ) + 6 H 2 O ( l ) Δ H = − 1530.4 kJ (a) How will the amount of ammonia at equilibrium be affected by 1. removing O 2 ( g )? 2. adding N 2 ( g )? 3. adding water? 4. expanding the container at constant pressure? 5. increasing the temperature? (b) Which of the above factors will increase the value of K ? Which will decrease it?
Solution Summary: The author explains Le Chatelier's principle: if at equilibrium, any change in temperature, concentration or pressure is applied to a system, the shift in equilibrium takes place to counteract the change.
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.
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell