Redox
What makes a reaction a redox reaction?
Transfer of electrons.
In this type of cell, ____________ energy is converted into _____________ energy
Chemical to electrical
In this type of cell ________ energy is converted into _______ change.
electrical, chemical
what are 3 ways to remember important redox information?
An ox. Red cat. Leo says ger.
# of sig figs in 6.7067
5
What are the 2 types of energy involved in a redox reaction?
Electrical and chemical
What is a salt bridge and what does it do.
Passage that allows the passage of ions.
What is electrolysis?
Using electricity to cause change/break things down.
What is an oxidation number?
Charge of an ion.
What is a double replacement reaction?
Cations trade anions.
Electrons are gained in______ and oxidation numbers ________
Reduction, decrease
Electrons flow from the ______ to the ______.
anode to cathode.
What is necessary for an electrolytic cell to operate?
Power supply, electrodes, solutions, wire
What is an anode?
place where oxidation happens.
Name of the type of bond where electrons are transfered?
Ionic
An increase in the charge of an atom is a result of?
Oxidation
Write a half reaction that could occur at the cathode.
X++e- -->X
Can you use table J for electrolytic cell questions.
not really, it is backwards.
What is the oxidation number of H in H2O
What about C in CO2
H=+1
C=+4
What is an anion?
ion with negative charge.
What is a practical application of redox?
Car battery
Why do electrons transfer in a voltaic cell?
Spontaneous, activity series.
Write a half reaction for the oxidation of sodium
Na->Na++e-
Challenge: What is the oxidation number of carbon in glucose?
+4
What happens to the concentration of hydronium as pH increases?
decreases