Oxidation states
Oxidation is the _______ of electrons.
Loss
Is Double Replacement an example of a Redox Reaction?
NO, it is NOT a Redox Reaction.
In a Half-reaction, the number of electrons lost ____ the number of electrons gained
equal
anode
True or False, Higher up metals are more reactive
TRUE
Reduction is the _______ of electrons.
Gain
A redox reaction is a reaction that involves the ____ and ____ of ELECTRONS
Loss and Gain
In a Half-reaction, when oxidized, electrons go on the ________ side
PrOduct (remember, O for Oxidation!)
Based on table J, which metal is more active than tin, but less active than zinc?
A) Ag
B) Cr
C) Cs
D) Mn
B) Cr
Are most easily oxidized metals near the TOP or BOTTOM of table J?
Closer to TOP
The oxidation number of free elements are what?
Is a single-replacement reaction a Redox reaction? Yes or No?
Yes
In a Half-reaction, when reduced, electrons go on the ________ side
Reactant side (remember, R for Reduced!)
In electrochemical AND electrolytic processes, electrons always flow from the _____ to the _____
the anode to the cathode
Yes or No, is I2 MORE easily reduced than Br2?
No, Br2 is more is more easily reduced than I2
What is the oxidation number of hydrogen in barium hydride, BaH2?
-1 (minus one)
In the equation: 2Na + Cl2 --> 2NaCl
Which substance is the reduced substance?
Cl2
In the Half-reaction equation: Al0 ---> A+3 + 3e-
Has Oxidation or Reduction occured?
Oxidation
Which energy conversion occurs in an operating electrolytic cell?
electrical energy to chemical energy
What's a spontaneous reaction?
What is the oxidation number of S in Na2SO4?
+6
In the equation: 3H2 + N2 --> NH3
Which substance is the oxidized substance?
H2
In the equation: Mg+2 + 2e- ---> Mg0
Has Oxidation or Reduction occured in the following Half-reaction?
Reduction
Which number changes when a Cu atom becomes a Cu+2 ion?
Oxidation state
Based on Reference Table J, which of these elements is the least actively oxidized?
A) Sr B) Cu C) Fe D) Ti
2) Cu