calculate, and balance equations

Find the compound that has the highest entropy , calculate Delta G, Balance the following reactions(in basic or acid solution), calculate the equilibrium
constant, Complete the nuclear equations
homework_chapter_18_chem_135.docx

Unformatted Attachment Preview

Don't use plagiarized sources. Get Your Custom Essay on
calculate, and balance equations
Just from $13/Page
Order Essay

1. Circle the compound that has the highest entropy. Briefly explain why.
a. Li(s) or Li(l)
b. C2H5OH(l) or CH3OCH3(l) Hint: Which molecule can hydrogen bond?
c. Ar(g) or Xe(g)
d. CO(g) or CO2(g)
e. O2(g) or O3(g)
f. NO2(g) or N2O4(g)
2. Using data in the appendix, calculate standard entropy changes for the following reactions at 25oC.
a. H2(g) + CuO(s) ? Cu(s) + H2O(g)
b. 2Al(s) + 3ZnO(s) ? Al2O3(s) + 3Zn(s)
c. CH4(g) + 2O2(g) ? CO2(g) + 2H2O(l)
3. Predict whether the entropy change will be positive or negative for each reaction and state why.
a. 2KClO4(s) ? 2 KClO3(s) + O2(g)
b. H2O(g) ? H2O(l)
c. 2Na(s) + 2H2O(l) ? 2NaOH(aq) + H2(g)
d. N2(g) ? 2N(g)
4. Use appendix to calculate ?G for the following reaction at 25oC.
a. 2Mg(s) + O2(g) ? 2MgO(s)
b. 2SO2(g) + O2(g) ? 2SO3(g)
5. From the values of ?H and ?S, predict which of the following reactions would be spontaneous at
25oC.
a. ?H = 10.5 kJ/mol, ?S = 30 J/K*mol
b. ?H = 1.85 kJ/mol, ?S = -113 J/K*mol
c. If either of the reactions is nonspontaneous at 25oC, at what temperature might it become
spontaneous?
6. Find the temperature ranges at which the following reactions with the following ?H and ?S values
would be spontaneous:
a. ?H = -126 kJ/mol, ?S = 84 J/K*mol
b. ?H = -11.7 kJ/mol, ?S = -105 J/K*mol
7. Calculate Kp for the following reaction at 25 oC.
H2(g ) + I2(g) ?? 2HI(g) ?Go = 2.60 kJ/mol
8. For the auto-ionization of water at 25oC, Kw = 1.0 x 10-14. What is ?Go?
9. a. Find some data table and calculate ?Go for the process
C(diamond) ? C(graphite)
Is the formation of graphite favored? If so, why is it that the diamonds in a diamond ring do not
become graphite?
10. Kp = 4.40 for the following reaction at 2000. K.
H2(g) + CO2(g) ?? H2O(g) + CO(g)
a. Calculate ?Go for the reaction.
b. Calculate ?G for the reaction when the partial pressures are PH = 0.250 atm,
PCO2 = 0.780 atm, PH2O = 0.660 atm and PCO = 1.20 atm.
11. Balance the following reactions.
a. H2O2 + Fe2+ ?? Fe3+ + H2O (in acidic solution)
b.
Cu + HNO3 ?? Cu2+ + NO + H2O (in acidic solution)
c. CN- + MnO4- ?? CNO- + MnO2 (in basic solution)
d. Br2 ?? BrO3- + Br-
(in basic solution)
e. S2O32- + I2 ?? I- + S4O62-
(in acidic solution)
Balance the following reactions.
f.
Mn2+ + H2O2 ?? MnO2 + H2O (in basic solution)
g. Bi(OH)3 + SnO22- ?? SnO32- + Bi (in basic solution)
h. Cr2O72- + C2O42- ?? Cr3+ + CO2 (in acidic solution)
i.
ClO3- + Cl- ?? Cl2 + ClO2 (in acidic solution)
12 Calculate the standard emf of a Mg/Mg2+ and Cu/Cu2+ cell at 25oC. Write the balanced equation for
the reaction.
13 Circle which of the following reagents can oxidize H2O to O2(g) under standard conditions.
Briefly explain your answer.
j.
H+ (aq)
k. Cl- (aq)
l.
Cl2(g)
m. Pb2+ (aq)
n. MnO4- in acid
14 Predict whether the following reactions would occur spontaneously in aqueous solution at 25oC,
1M concentration (standard conditions). Show your work.
o. Ca(s) + Cd2+ (aq) ?? Ca2+(aq) + Cd(s)
p. 2Br- (aq) + Sn2+ (aq) ?? Br2(l) + Sn(s)
q. 2Ag(s) + Ni2+ (aq) ?? 2Ag+ (aq) + Ni(s)
r.
Cu+ (aq) + Fe3+ (aq) ?? Cu2+ (aq) + Fe2+ (aq)
15. Circle the species in each pair which is a better oxidizing agent under standard conditions.
Briefly explain your answer!
s. Br2 or Au3+
t.
H2 or Ag+
u. Cd2+ or Cr3+
v. O2 in acidic solution or O2 in basic solution
16. Circle the species in each pair which is a better reducing agent under standard conditions.
Briefly explain your answer.
w. Na or Li
x. H2 or I2
y. Fe2+ or Ag
z. Br- or Co2+
17. What is the equilibrium constant for the following reaction?
Mg(s) + Zn2+ (aq) ?? Mg2+ (aq) + Zn(s)
18. The Keq = 2.69 x 1012 at 25oC for a reaction. Calculate ?G and Ecello from the Keq.
Sr(s) + Mg2+(aq) ? Mg(s) + Sr2+(aq)
?G =
Ecello =
19. How does a nuclear reaction differ from an ordinary chemical reaction?
20. What is:
a. A positron
b. Beta particle
c. Alpha particle
d. Gamma ray
21. Complete the nuclear equations and identify X in the following reactions:
+ 11p ?
4
2?
e.
26
12Mg
f.
59
27Co
+
2
1H
g.
235
92U
+
1
0n
?
94
36Kr
h.
53
24Cr
+
4
2?
?
1
0n
i.
20
😯
?
+ X
60
27Co
+ X
+
139
56Ba
+ 3X
+ X
?209F + X
22. Complete the nuclear equations and identify X in the following reactions:
j.
135
53I
?
135
k.
40
19K
?
0
-1?
l.
59
27Co
+
m.
235
92U
+
54Xe
1
0n
1
0n
+ X
+ X
? 5625Mn + X
?
99
40Zr
+
135
52Te
+ 2X
23. The radioactive decay of 206Tl to 206Pb has a half-life of 4.20 min. Starting with 5.00 x 1022 atoms
of Tl, how many atoms remain after 42.0 min.
24. Determine whether or not each nuclide is likely to be stable.
n.
o.
p.
q.
25
Mg
Ne
51
Co
125
Te
25
25. Predict the mode of decay for each unstable nuclide
a. 132Sb
b. 139Te
c. 223Fr
d. 123Ba
26. A wooden boat discovered south of the Great Pyramid has a carbon-14/carbon-12 ratio that is
72.5% of that found in living organisms. How old is the boat?
(The half life of carbon 14 is 5730 years.)

Purchase answer to see full
attachment

Order a unique copy of this paper
(550 words)

Approximate price: $22

Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency

Order your essay today and save 15% with the discount code ESSAYHELP