Chem124L Final Exam spring 2021 - Sharon Liu 2022 questions & answers
0 view 0 purchase
Course
CHEM 124
Institution
CHEM 124
) Classify solutions with the following characteristics acidic, basic or neutral:
pH = 10 pH = 4 pH = 7.3 pH = 6
a) Basic, acidic, basic, acidic
b) Neutral, acidic, basic, acidic
c) Basic, acidic, neutral, acidic
d) Basic, acidic, neutral, basic
2) The curved surface that is apparent in a nar...
chem124l final exam spring 2021 sharon liu 2022 questions amp answers
Written for
CHEM 124
All documents for this subject (9)
Seller
Follow
PossibleA
Reviews received
Content preview
Chem 124L: Final Exam SP 2021
NAME: Sharon Liu
Instructions: To select the correct answer, highlight or put the entire answer in bold font. To
submit your completed exam, save the complete exam file as a PDF and email the PDF to
your TA by 12:00 PM on May 18th. No late Final Exam submissions will be graded.
1) Classify solutions with the following characteristics acidic, basic or neutral:
pH = 10 pH = 4 pH = 7.3 pH = 6
a) Basic, acidic, basic, acidic
b) Neutral, acidic, basic, acidic
c) Basic, acidic, neutral, acidic
d) Basic, acidic, neutral, basic
2) The curved surface that is apparent in a narrow container is known as a:
a) Delivery mark
b) Meniscus
c) Pipet volume
d) None of the above
3) Mouth pipetting of chemicals is sometimes permitted if transferring non-hazardous
chemicals:
a) True
b) False
4) A saturated solution contains:
a) Less solute per unit volume
b) More dissolved solute per unit volume
c) The amount of solute is in equilibrium with the solvent
d) None of the above
5) Convert a temperature of 90oF to a Celsius value:
a) 32.2
b) 194
c) 67.7
d) 120.2
6) If urine has a density of 1.07 g/ml, what would be the mass of 25 ml of urine?
a) 0.0428 g
b) 23.36 g
c) 26.75 g
d) 25.00 g
This study source was downloaded by 100000830772748 from CourseHero.com on 02-05-2022 00:58:02 GMT -06:00
, 7) Esters can be prepared by reacting an alcohol with a _____:
a) Sodium hydroxide
b) Acetic anhydride
c) Carboxylic acid
d) None of the above
8) The reason pure water has a pH of 7 is that there is the same concentration of hydrogen
and hydroxide ions in the self-ionization of water:
a) True
b) False
9) A solution for which [H+] = 1.0 x 10-5 will have a pH of:
(pH = - log[H+])
a) 11.0
b) 5.0
c) -5.0
d) -9.0
10) Which of the following statements is true for neutral solutions in which water is the
solvent:
a) Neutral solutions contain H3O+ and OH- ions in equal concentration
b) Neutral solutions contain no OH-
c) Neutral solutions contain no H3O+
d) None of the above
11) Attractive forces between solute and solvent molecules are an important factor in solution
formation:
a) True
b) False
12) An ion in solution that is surrounded by water is a(n) _____ ion:
a) Hydrated
b) Osmotic
c) Saturated
d) Colloid
13) A solution made by combining 2.00 g of sugar and 100 mL of water (Density of water =
1.00 g/ml). What is the concentration in % w/w?
a) 20.0
b) 2.0
c) 1.96
d) None of the above
This study source was downloaded by 100000830772748 from CourseHero.com on 02-05-2022 00:58:02 GMT -06:00
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
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
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 PossibleA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.49. You're not tied to anything after your purchase.
