Acids
Bases
Buffers
Titrations
Electrochemistry
100
What is the percent dissociation of HI?

100% - it is strong and dissociates completely

100

Give an example of a conjugate acid-base pair.

Anything, could be ....

NH3 and NH4+

H2O and OH-

HC2H3O2 and C2H3O2-

100

What does a buffer do/what is it's purpose?

RESIST changes in pH, not negate

100

What two things do you have in a titration? What are their names and what do you know about them?

Titrant - what you know the concentration of, you add this to the analyte to find it's concentration

Analyte - what you do NOT know the concentration of

100

What is voltage?

a potential difference/electrical gradient
200

What acid is made from a SO4^2- ion?

Sulfuric Acid!

200

What is the pH of a solution with a [OH-] = 3.16x10^-10

pH = 4.5

200

What are the two criteria for the "best" possible buffer?

1 - high concentration of buffer soln

2 - equal concentrations of acid and base

200

How many equivalence points does the titration of acetic acid with a strong base have?

ONE

HC2H3O2 - monoprotic

200

Current is the ______.

flow of charged particles

300

What is the definition and an example of a binary acid?

Binary acid - made up of two elements with one of them being hydrogen

ex: HCl, HBr, HI, HF, H2S

300
Find the pH of a 1.33M Ba(OH)2 solution.

pH = 14.425


*DIBASIC

300

Where on a titration curve do you have your best possible buffer - and why?

Half-equivalence point, you have a 1:1 ratio of a weak species and it's conjugate!

300

What will be the composition of the solution at the 2nd half equivalence point of the titration of H3PO4 with a strong base?

50% H2PO4(-) and 50% HPO4(2-)

300

The anode gets ______ and the cathode gets _______. 

oxidized; reduced

400

What is a coordinate covalent bond?

When one thing donates a lone pair and the other donates nothing to the bond.

400

What bases play a part in both a proton transfer reaction and an acid-base neutralization reaction?

Proton Transfer - bronsted lowry

Acid-Base Neutralization - arrhenius

400

Is this a buffer?

HCl and Cl ion

NO, a buffer is a WEAK species and it's conjugate

400

What is the purpose of a titration?

to determine the concentration of an acidic or basic species

- NOT TO DETERMINE pH

400

Copper Reduction Potential E = +0.34V

Zinc Reduction Potential E =-0.76V

What is the voltage of this battery?

1.1 V

*spontaneous, will DO work, negative delta G

500

Find pH of a solution that is 0.25M NH3(aq), the Ka of NH4+ is 5.8 *10^-10

pH = 11.32


*find Kb so you can do the square root equation!

500

Which of the following species create a basic solution:

1 - NaOH

2- Ca(OH)2

3- NaC2H3O2

All of them !!

1 - strong base

2 - strong base that is DIBASIC

3 - spectator ion and strong conjugate base

500

What is the pH of an equimolar buffer solution of H2PO4(-) and HPO4(2-)?

*the Ka for this solution is 6.17x10^-8

7.21 = pH

500

What [HClO4] is needed if 0.800L of 1.5 MLiOH is used to titrate 300mL of acid?

4M HClO4

500

You run a current for 1 minute and 8.15 x 10^-18 electrons pass. How many moles of Fe 3+ would be reduced?

Moles of iron: 1.35 x 10^-5 mol / 3 = 4.51 x 10^-6