100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
CHEM 102 Winter 18 Final Exam (A) Questions and Answers,100% CORRECT $15.99   Add to cart

Exam (elaborations)

CHEM 102 Winter 18 Final Exam (A) Questions and Answers,100% CORRECT

 8 views  0 purchase
  • Course
  • Institution

CHEM 102 Winter 18 Final Exam (A) Questions and Answers Potentially useful data: x  1 atm = 760 torr = 760 mm Hg 2 a [A]t = – kt + [A]o ΔG° = ΔH° – T ΔS° ln[A]t = – kt + ln[A]o ΔG = ΔG° + RT ln Q 1/[A]t = kt +1/[A]o ΔG° = – RT ln K First order half-life: t1/2 = ln2 ...

[Show more]

Preview 3 out of 19  pages

  • March 6, 2023
  • 19
  • 2022/2023
  • Exam (elaborations)
  • Questions & answers
avatar-seller
CHEM 102 Winter 18 Final Exam (A) Questions and Answers
Potentially useful data:
b  b 2  4 ac
x 1 atm = 760 torr = 760 mm Hg
2a
[A]t = – kt + [A]o ΔG° = ΔH° – T ΔS°
ln[A]t = – kt + ln[A]o ΔG = ΔG° + RT ln Q
1/[A]t = kt +1/[A]o ΔG° = – RT ln K
First order half-life: t1/2 = ln2 / k ΔG° = – nFE°

pH  RT
pKa

log
base E  E  ln Q
acid  nF
-1 -1 -
R = 8.314 J mol K F = 96500 C/mol e



1. Please choose the letter “A” as your answer for this question.


2. How many hydrogen atoms would be present in methylbenzene?
a) 6
b) 8
c) 10
d) 12
e) 14



o
3. Which of the following solids has the highest standard entropy at 25 C?

a) LiF
b) LiI
c) LiCl
d) LiBr
e) All have the same standard entropy.




Page 1 of 14

,4. Which of the following would dissolve CuI(s) the most?
a) 0.6 M MgI2(aq)
b) distilled water
c) 0.1 M CuNO3(aq)
d) 1 M NaI(aq)
e) 0.1 M NaI(aq)

5. Consider a buffer solution of a weak acid, HA. When will the buffer be most effective in keeping the pH
around a certain value?

a) [A- ] = [HA]
b) [HA] = [H3O+]
c) [H3O+] = [OH-]
d) [OH-] = [HA]
e) [H3O+] = [HA]/[A- ]


6. Determine the reaction rate with respect to [H2] in the ammonia formation:

N2 (g) + 3 H2 (g) → 2 NH3 (g)

a) rate = + 3Δ[H2]/Δt
b) rate = - 3Δ[H2]/Δt
c) rate = + 1/3 Δ[H2]/Δt
d) rate = - 1/3 Δ[H2]/Δt
e) Not enough info to determine.


+ –4
7. Estimate the [H3O ] in a buffer that consists of 0.30 M HCOOH (Ka = 1.7 × 10 ) and 0.20 M HCOONa.
–4
a) 1.1 × 10 M
–4
b) 2.6 × 10 M
–4
c) 4.3 × 10 M
–5
d) 6.7 × 10 M
–5
e) 7.6 × 10 M




Page 2 of 14

, 8. Which substance exhibits ONLY London dispersion intermolecular forces between its molecules?
a) HF
b) SiCl4
c) PF3
d) OF2
e) CH3Cl



Use the chemical structure A given below to answer questions 9 and 10:
CH3
H
H 3C C CH2
C
H CH

CH3
A

9. What is the correct name of compound A?
a) 4,5-dimethylpentane
b) 4,5-dimethyl-2-pentene
c) 3-methyl-4-hexene
d) 4-methyl-2-hexene
e) 2-methyl-3-pentene


10. Which statement is FALSE about compound A?
a) Methylcyclohexane is a structural isomer of compound A.
b) Compound A can be used as a monomer for addition polymerization.
c) Compound A is a hydrocarbon.
d) There are two possible, distinct 3-D orientations of the C-H bonds around the C=C bond.
e) The addition of two hydrogen atoms to compound A would convert this compound into an alkyne.




Page 3 of 14

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller ElonMusk. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $15.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

82871 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$15.99
  • (0)
  Add to cart