Chemistry Flashcards
At the anode the mass of the metal …. and the concentration of the ion ….
At the anode the mass of the metal decreases and the concentration of the ion increses
At the cathode the mass of the metal… and the concentration of the ion…
At the cathode the mass of the metal increases and the concentration of the ion decreases
Indicate the role of the salt bridge (at the anode) (we say m and concentration bel sou2al)
-ve ions migrate from the salt bridge towards the anode to compensate the excess of the positive charge.
Indicate the role of the salt bridge (at the cathode) (we say m and concentration bel sou2al)
+ve ions will migrat3 from the salt bridge towards the cathode to compensate the deficiency of the positive charge
Overall equation
? Anode ? Cathode=>
Metal (anode), ion(cathode)
Lower E⁰ represents
Anode
The SHE is? And the E ⁰ of this SHE is?
H±/H²/Pt
E⁰=0
Role of salt bridge
1- It closes the circuit
2- It maintains the electroneutrality of the solutions
EMF=
EMF= E⁰ cathode - E⁰ anode
EMF>0.3
The reaction is spontaneous and complete
Using the electrochemical classification: where is the anode and where is the cathode
|
|■=>cathode
|
|■=>anode
From where to where do the e-s migrate?
From the anode to the cathode
Pd²± has the most?
Oxidizing power
When asked about the role of the salt bridge we should also mention the?
Mass and concentration
Cell notation is?
- Metal/ion || ion/metal +
Anode cathode
The higher E⁰ represents the
Cathode
The lower E⁰ represents the
Anode
Using the overall equation the part from the oxidation rxn(metal) is the … and the part from the red half rxn(ion) is the…
Using the overall equation the part from the oxidation rxn(metal) is the anode and the part from the red half rxn(ion) is the cathode
Cell notation awal part tene part anode / cathode
Awal part anode tene cathode
Electrochemical classification
Higher:
Lower:
Higher cathode
Lower anode
When the limiting reaction ends the reaction ?
Ends
When they say indicate the anode and the cathode we write them as?
Example :Sn²±/Sn ?
H+/H²/Pt ?
We write them as redox couples
Anode=> Sn²±/Sn
Cathode =>H+/H²/Pt
Steps of table of progress
1- Calculate the initial number of moles of reactants and products
2- Identify the limiting reactant
3-table t=0
🔺️ t
t
t ♾️
4-at t ♾️ nAg+=> ….=0
….mass from n
Q=
Q=i×t
