Exam 3 Review

Module 8

100

What is the equilibrium constant symbol and why/what does it exist for? It is a ratio of what over what? Do equation coefficients impact the K?

What is: the symbol is K and exists because some equations are reversible and show when the RATES of the forward and reverse reaction are equal, the ratio is products over reactants, and yes, the coefficients are involved 

200

What is the equilibrium constant EQUATION for 

3A (g) +4B (g) + 3C (s) --> D (aq) + 2E (l)

K= [D]/[A]^3[B]^4

300

2SO2(g)+O2(g)⇌2SO3(g) 

At 500 K, the equilibrium constant is 4.33

What is Kp? 

What is 0.11?

400

Would NaCl have an equilibrium constant? Yes or no? WHY?

What is NO. NaCl is a ion salt that dissociates completely due to having a group 1 element and halogen, so it will dissociate completely

500

At a certain temperature, T, the equilibrium constant, Kc= 50. for the reaction: 2NO2 (g) ⇌ N2O4 (g)

In an experiment, 3.00 mole of N2O4 was introduced into a previously evacuated 5.00 L vessel and was allowed to react until equilibrium was reached. Show the steps to calculate the concentrations of all species for this reaction at equilibrium

GRAPH THE REACTION FROM INITIAL CONCENTRATIONS TO EQUILIBRIUM 

What is 0.55 and 0.1?

Module 9

100

What is the name of H2SO4? Is this a strong or weak acid? 

Sulfuric Acid; STRONG

200

Acid strength decreases in the series HI > HSO4– > HF > HCN. Which of these species is the weakest base?

A) I–

B) SO4 2–

C) F–

D) CN–

E) H2SO4

What is A? 

300

What is the pH of 0.15M Ba(OH)2?

What is 13.48? 

400

The pOH of 0.28M Ammonia is 2.65. What is the hydronium ion concentration of this solution? 

What is 4.47 X 10^-12? 

500

What is the pH of 0.3M Acetate ion? The Ka of ACETIC ACID is 1.8 X 10^-5

What is 9.1? 

Module 10

100

What kind of salt is Ammonium Chloride? 

What is an acidic salt? 

200

What kind of salt is AB? 

A is the conjugate of a weak base: Its Kb is 5

B is the conjugate of a weak acid, Its Ka is 7

What is an acidic salt? 

300

Carbonic acid can dissociate 2 times because it has 2 ______. It's Ka values are: 

Ka1= 4.3×10−7 

Ka2= 5.6×10−11 

Will Bicarbonate (the middle molecule) act as an acid or a base? 

What is 2 hydrogens and basic? 

400

What is the pH of 0.2M phosphorous acid? What is the Chemical Formula of Phosphorous Acid? 

• Ka₁ = 2.0 × 10⁻²

• Ka₂ = 9.0 × 10⁻⁸

• Ka₃ = 1.0 × 10⁻¹³

What is 1.2?

500

You make a buffer with 24g of Sodium Formate in 0.5M Formic Acid. What is the pH of the buffer if the container the system is in is 2L? The Ka for formic acid is 1.8 X 10^-4

What is 3.28

Miscellaneous: Chemistry

100

How do we go from Celsius to K? (bonus 100, how do we go from Fahrenheit to Celsius?)  

What is add 273.15 to C to get K? 

(bonus: 5/9 ×(F−32))

200

What are the 2 values for the gas (R) constant? When do we use either? 

0.0821 when pressure is involved

8.314 when energy is involved 

300

What is the pH of 0.65M HBr IF it is only 20% ionized?

What is 0.89? 

400

2SO2(g)+O2(g)⇌2SO3(g) 

I take the given reaction and put it into a much smaller container. Would there be any shift? If so, in what direction? What would be made if there was one? 

What is yes there would be a shift to the LEFT, and you would make oxygen and hyposulfite? 

500

What are all the organic functional groups IN ORDER and their structures? 

What is Carboxylic acid, Ester, Amide, Aldehyde, Ketone, Alcohol, Amine, Alkyne, Alkene, Alkane ,Ether? 

Miscellaneous: NOT CHEMISTRY

100

Who won the college basketball championship in 2025?

The University of Florida Gators 

200

What is the type of alcohol used in Alcoholic drinks?

ethanol 

300

How many bones does a baby have at birth?

What is 300?

400

Who are the Penguins of Madagascar? What are their names?

Who is Kowalski, Private, Skipper, and Rico?

500

What is the capitol of New Mexico?

What is Santa Fe?