It has an inert platinum electrode dipped into a solution of 1moldm-3 concentration of H+ ions, with hydrogen gas of 1 atm pressure, bubbled over it at a temperature of 298K.
1 of 10
Define the standard electrode potential.
The EMF value measured on a high resistance voltmeter when a half cell containing all solutions of 1moldm-3 and all gases of 1 atm pressure is connected to the standard hydrogen electrode at 298K.
2 of 10
In fuel cells, H+ ions react with oxygen at the cathode to produce water. What does this do?
This generates a flow of electrons in the external circuit which results in a current.
3 of 10
Enthalpy of hydration.
The enthalpy change when one mole of aqueous ions is formed from one mole of its gaseous ions.
4 of 10
Enthalpy of formation.
The enthalpy change when one mole of a compound is produced from one mole of its elements in their standard states under standard conditions.
5 of 10
Enthalpy of lattice formation.
The enthalpy change when one mole of an ionic compound is formed from one mole of its gaseous ions.
6 of 10
Enthalpy of lattice breaking.
The enthalpy change when one mole of an ionic compound is broken into one mole of its gaseous ions.
7 of 10
Enthalpy of solution.
When one mole of a substance dissolves completely in a solvent.
8 of 10
Gibbs free energy is positive?
The reaction is not likely to occur.
9 of 10
Gibbs free energy is negative?
The reaction is likely to occur spontaneously.
10 of 10
Other cards in this set
Card 2
Front
Define the standard electrode potential.
Back
The EMF value measured on a high resistance voltmeter when a half cell containing all solutions of 1moldm-3 and all gases of 1 atm pressure is connected to the standard hydrogen electrode at 298K.
Card 3
Front
In fuel cells, H+ ions react with oxygen at the cathode to produce water. What does this do?
Comments
No comments have yet been made