REDOX :D

Types of Reactions

100

Explain the properties of a Synthesis (Combination) reaction.

n a synthesis reaction two or more chemical species combine to form a more complex product. A + B → AB

200

H20 ---> 2 H2 + 02  What is the type of this reaction?

Decomposition 

300

Balance this equation, and state the type of reaction: Pb(NO3)2 + NaI ---> PbI2 + NaNO3

Pb(NO3)2 + 2NaI ---> PbI2 + 2NaNO3

400

State a synthesis reaction that occurs in real life.

Answers may vary.

500

Balance this equation, and state the type of reaction it is: C2H6 + O2 --> CO2 + H2O

2(C2)(H6) + 7(O2) --> 4(CO2) + 6(H2O)

Combustion

Oxidation Numbers

100

Oxidation number of an element in group 5

-3

200

-2

What is the oxidation number of oxygen in most compounds?

300

What is the charge of a free element or what is the charge of a neutral compound?

0

400

What is the net oxidation number for Na2SO4?

0

500

What is the oxidation state of Cr in (Cr2O7)-2

+6

Half Reactions

100

What is the first step in balancing a redox reaction?

Write the unbalanced ionic equation (Write separate half reactions is also acceptable)

200

What are the two ways to balance redox reactions?

Half Reactions and Oxidation Number Changes

300

What are the two types of reactions that are not redox reactions?

Anything that isn't double replacement or acid-base is a redox reaction.

400

You Got 400

You Got 400

500

Balance this equation in an acidic solution: S(s) + HNO3(aq) --> SO2(g) + NO(g) + H20(l)

3S(s) + 4HNO3(aq) --> 3SO2(g) + 4NO(g) + 2H20(l)

Unknown

100

"... has an oxidation of equal degree"

"Every reduction...

200

What does Oil mean?

Oxidation is losing e-

300

you got 300

you got 300

400

What is the origin of the term "oxidation"?

The gain of oxygen to produce oxides

500

What is the meaning of the term "reduction" in terms of Hydrogen?

Gain of hydrogen