Answered Essay: Fill out the whole table, you do not have to show your work on all of them, just show

Fill out the whole table, you do not have to show your work on all of them, just show your work on 4 different kinds, example:

Problem #1: an acid that I measured the pH, we turn that into hydrogen ion concentration and fill out the table.
Problem #2: an acid where I did not measure the pH, in which case you start by looking up kA, then fill out the table
Problem #3: a base where I measured the pH turn that into hydroxide concentration and fill out the table,
Problem #4: a base where I did not measure the pH, then you have to find kB and fill out the table.

You only have to show work for each one of these and the rest can be done without any work.

In that table if you were to look at “Exp pH” you could see that some of them are crossed over and another pH is written, those ones are called “measured” for the measured columns you have to fill out “Theo Ka or Kb” and the “%error” as well. For the non measured rows, you do not have to fill out “Theo Ka or Kb” and the “%error.”

1) For the Conjugate Acid and Conjugate Base, do not put H+, OH-. If it’s a weak acid, put that weak acid. For Conjugate base, then put the weak base. If the compound was a weak base, then put that thing in there, then put the conjugate acid in the other column. And do not include any spectator ions.

2) Do not bother to use the ice table to determine X, values for Ka or Kb can be looked up online.

3) In the case of nitrate ion, we cannot Kb, we can only look up Ka for its conjugate acid.

4) 7 of them have their pH measured. And the other 7 do not and that should be looked up.

TABLE 3.2 K, Calculation Report Sheet 25 M soln Exp pH Conjugate CH,NH 11.95 CH,NH, .IE-12 M Ctpoti Conjugate DO (H1 K, PA Thee, 1 % Err of K Acid Base ps, 1 % Diss. 2.05 8.9E-3M 3.2E-4 3.50 3.56 3.34 4.6E-4 30% NaC H,O 9.14 NH, NH, NaHSO1.36 H,SO, 1.17 1St 1,44 KH,PO K,PO 12.86 K,HPO 10.25 CisH2 NO, 10.91 B,BO, 4.98

Expert Answer


(i) pH = 2.54 = -log[H+]

[H+] = antilog (-pH )= 0.00288 M

(ii) Ka = [H+][A-] / [HA]

Ka = x2 / [HA]

x = [H+]

pH = 9.14 = -log[H+]

[H+] = 7.244 X 10-10 M

Ka = (7.244 X 10-10)2 / 0.25 = 2.1 X 10-20

(iii) pOH = 14 – pH

pOH = 14- 10.96 = 3.04

(iv) [OH-] = 10^-14 / [H+] =

pH = -log [H+] = 5.88

[H+] = antilog(-[H+]) = 1.32 X 10-6 M

[OH-] = 7.58 X 10-9 M

(v) Kb = Kw / Ka = 10-14 / 7.244 X 10-10 = 1.38 X 10-5

(vi) pKb = -logKb = 4.86

(vii) % dissociation = [H+] X 100 / [HA] =

[H+ ]= 0.00288

% dissociation = 0.00288 X 100 / 0.25 = 1.152%

0.252 Exp pH minus pH Conjugate acid [H+] Ka pKa Conj base pOH minus pOH [OH-] Kb pKb % dissociation Theo pKa Theo pKb TheoKa or Kb %error of K
CH3NH2 11.95 -11.95 CH3NH2+ 1.12202E-12 2.05 -2.05 0.008912509 0.00031521 3.501401 3.536710072
HC2H3O2 2.54 -2.54 0.002884032 3.30065E-05 4.481401 C2H3O2- 11.46 -11.46 3.46737E-12 1.144456946 4.75 1.77828E-05 5.654725
NaC2H3O2 9.14 -9.14 H2C2H3O2 7.24436E-10 4.86 -4.86 1.38038E-05 7.56135E-10 9.121401 0.005477715
NH3 10.96 -10.96 NH4+ 1.09648E-11 3.04 -3.04 0.000912011 3.30065E-06 5.481401 0.361909063
NH4+ 5.88 -5.88 1.31826E-06 6.89604E-12 11.1614 NH3 8.12 -8.12 7.58578E-09 0.000523118 9.25 5.62341E-10 -20.6638
NaHSO3 1.36 -1.36 0.043651583 0.007561352 2.121401 NaSO3- 12.64 -12.64 2.29087E-13 17.32205683
H2SO3 1.17 -1.17 0.067608298 0.01813842 1.741401 HSO3- 12.83 -12.83 1.47911E-13 26.8286895
NA2CO3 11.54 -11.54 NaHCO3 2.88403E-12 2.46 -2.46 0.003467369 4.77089E-05 4.321401 1.375939883
NaHCO3 9.5 -9.5 H2CO3 3.16228E-10 4.5 -4.5 3.16228E-05 3.96825E-09 8.401401 0.012548721
H3PO4 1.6 -1.6 0.025118864 0.002503799 2.601401 H2PO4- 12.4 -12.4 3.98107E-13 9.9678033
KH2PO4 4.44 -4.44 3.63078E-05 5.23118E-09 8.281401 KHPO4- 9.56 -9.56 2.75423E-10 0.014407859
K3PO4 12.86 -12.86 K2HPO4 1.38038E-13 1.14 -1.14 0.072443596 0.020825693 1.681401 28.74745873
K2HPO4 10.25 -10.25 KH2PO4 5.62341E-11 3.75 -3.75 0.000177828 1.25487E-07 6.901401 0.070566643
C18H21NO3 10.91 -10.91 C18H22NO3+ 1.23027E-11 3.09 -3.09 0.000812831 2.6218E-06 5.581401 0.322551792
H3BO3 4.98 -4.98 1.04713E-05 4.3511E-10 9.361401 H2BO3- 9.02 -9.02
Buy Essay
Calculate your paper price
Pages (550 words)
Approximate price: -

Help Me Write My Essay - Reasons:

Best Online Essay Writing Service

We strive to give our customers the best online essay writing experience. We Make sure essays are submitted on time and all the instructions are followed.

Our Writers are Experienced and Professional

Our essay writing service is founded on professional writers who are on stand by to help you any time.

Free Revision Fo all Essays

Sometimes you may require our writers to add on a point to make your essay as customised as possible, we will give you unlimited times to do this. And we will do it for free.

Timely Essay(s)

We understand the frustrations that comes with late essays and our writers are extra careful to not violate this term. Our support team is always engauging our writers to help you have your essay ahead of time.

Customised Essays &100% Confidential

Our Online writing Service has zero torelance for plagiarised papers. We have plagiarism checking tool that generate plagiarism reports just to make sure you are satisfied.

24/7 Customer Support

Our agents are ready to help you around the clock. Please feel free to reach out and enquire about anything.

Try it now!

Calculate the price of your order

Total price:

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.


Let us write that nagging essay.


Submit Your Essay/Homework Instructions

By clicking on the "PLACE ORDER" button, tell us your requires. Be precise for an accurate customised essay. You may also upload any reading materials where applicable.


Pick A & Writer

Our ordering form will provide you with a list of writers and their feedbacks. At step 2, its time select a writer. Our online agents are on stand by to help you just in case.


Editing (OUR PART)

At this stage, our editor will go through your essay and make sure your writer did meet all the instructions.


Receive your Paper

After Editing, your paper will be sent to you via email.

× How can I help you?