Recitation Worksheet Five - Key
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School
University Of Georgia *
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Course
1211
Subject
Chemistry
Date
Feb 20, 2024
Type
Pages
8
Uploaded by dalgirl0303
Recitation Worksheet 5 Name: UGA ID:
Instructions: Please enter your first and last name as it appears on the eLC roster (do not use a nickname). Your UGA myID is a combination of letters and numbers (example: mine is jmj81738). Download this worksheet and print it if you have a printer. Write the answers in the answer boxes and show your work when appropriate. Using the instructions in the Welcome module on eLC, convert your worksheet to a PDF and then upload it to Gradescope. The pages must be in the correct order
or Gradescope will not be able to read it. If you do not have a printer, download the worksheet and type your answers in the answer boxes and upload it to Gradescope. Write your work on separate sheets of paper, convert these pages to a PDF using the instructions in the Welcome module on eLC, then upload them to the dropbox on eLC for this worksheet. If you are using an app to annotate the worksheet, make sure the pages are in the correct order and have the same layout as the original
or Gradescope will not be able to read it. Answers must be written in the corresponding answer box or no credit will be awarded. This worksheet is due no later than 11:59 PM on the Friday of the recitation week.
The instructions for uploading worksheets to Gradescope can be found in the Content area of eLC in the Welcome Module. You must show your work to receive credit 1. Which of the following compounds are soluble in water? Select all that apply. A. Al(OH)
3
B. Ba(OH)
2
C. Pb(NO
3
)
2
D. Rb
2
S E. BaCO
3
F. AgBr G. Li
2
CrO
4
H. (NH
4
)
3
PO
4 Hey
C
O
G
H
8
mish
8
2. A student goes to the lab and starts cleaning out an old lab cabinet. While cleaning, they find a bottle of an unknown white solid. The curious student carefully adds the solid to a beaker of water and they note that the solid immediately dissolves. To the same beaker of water, they add an aqueous solution of Li
2
SO
4
, in which a white precipitate immediately forms. Based on these observations, which of the compounds below are potential identities of the unknown solid? Select all that apply. A. BaCl
2
B. PbCl
2
C. NaCl D. AlCl
3
E. CaCl
2
3. The student from the previous question finds another unknown bottle in the cabinet, except this time it is a clear solution. To determine the identity, they test a number of reactions yielding the following observations below: Unknown solution + HBr (aq) ĺ
precipitate forms Unknown solution + H
2
SO
4
(aq) ĺ
precipitate forms Unknown solution + NaOH (aq) ĺ
precipitate forms Unknown solution + Al(NO
3
)
3
(aq) ĺ
no precipitate forms Based on these observations, which of the following cations below could potentially be in the unknown solution? Select all that apply. A. K
+
B. Pb
2+
C. Ba
2+
D. Hg
2
2+
E. Ca
2+ salable
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B
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4. What is the correct balanced formula equation for the reaction between aqueous nickel(II) chloride and aqueous potassium carbonate? 5. What is the total ionic equation for the balanced formula equation below? 2 HC
2
H
3
O
2
(aq) + K
2
CO
3
(aq) ĺ
H
2
O (l) + CO
2
(g) + 2 KC
2
H
3
O
2
(aq) A. 2 H
+ (aq) + 2 C
2
H
3
O
2
-
(aq) + 2 K
+
(aq) ĺ
2 KC
2
H
3
O
2
(aq) B. 2 H
+ (aq) + 2 C
2
H
3
O
2
-
(aq) + 2 K
+
(aq) + CO
3
2-
(aq) ĺ
2 H
+ (l) + O
2-
(l) + C
4+
+ 2 O
2-
(g) + 2 K
+
(aq) + 2 C
2
H
3
O
2
-
(aq) C. 2 H
+ (aq) + 2 C
2
H
3
O
2
-
(aq) + 2 K
+
(aq) + CO
3
2-
(aq) ĺ H
2
O (l) + CO
2
(g) + 2 K
+
(aq) + 2 C
2
H
3
O
2
-
(aq) D. 2 H
+ (aq) + 2 C
2
H
3
O
2
-
(aq) ĺ
H
2
O (l) + 2 C
2
H
3
O
2
-
(aq) E. 2 C
2
H
3
O
2
-
(aq) + 2 K
+
(aq) ĺ
2 KC
2
H
3
O
2
(aq) 6. When hydrochloric acid is added to potassium sulfide the products are hydrogen sulfide gas and potassium chloride. What is/are the spectator ion(s) in this reaction? Select all that apply. A. NiCl (aq) + KCO
3
(aq) ĺ
KCl (aq) + NiCO
3
(s) B. NiCl
2
(aq) + K
2
CO
3
(aq) ĺ 2 KCl (aq) + NiCO
3
(s) C. NiCl (aq) + KCO
3
(aq) ĺ
KCl (s) + NiCO
3
(aq) D. NiCl
2
(aq) + K
2
CO
3
(aq) ĺ
2 KCl (s) + NiCO
3
(aq) E. NiCl (aq) + KCO
3
(aq) ĺ
KCl (aq) + NiCO
3
(aq) F. NiCl
2
(aq) + K
2
CO
3
(aq) ĺ
2 KCl (aq) + NiCO
3
(aq) A. K
+ B. H
+
C. Cl
-
D. S
2-
E. There are no spectator ions in this reaction B
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7. What is the net ionic equation for the balanced formula equation below? 2 HClO
4
(aq) + FeO (s) ĺ
Fe(ClO
4
)
2
(aq) + H
2
O (l) A. 2 ClO
4
-
(aq) + Fe
2+ (aq) ĺ
Fe(ClO
4
)
2
(aq) B. 2 H
+ (aq) + OH
-
(aq) ĺ
H
2
O (l) C. 2 H
+ (aq) + Fe
2+
(aq) + O
2-
(aq) ĺ
Fe
2+
(aq) + H
2
O (l) D. 2 H
+ (aq) + FeO (s) ĺ
Fe
2+ (aq) + H
2
O (l) E. 2 ClO
4
-
(aq) + 2 H
+ (aq) + Fe
2+ (aq) + O
2-
(aq) →
Fe(ClO
4
)
2
(aq) + H
2
O (l) 8. What is the net ionic equation for the balanced formula equation below? NH
4
Cl (aq) + NaOH (aq) ĺ
NH
3
(g) + H
2
O (l) + NaCl (aq) A. Cl
-
(aq) + Na
+
(aq) ĺ
NaCl (aq) B. NH
4
+ (aq) + OH
-
(aq) ĺ NH
3
(g) + H
2
O (l) C. NH
4
+ (aq) + Na
+
(aq) + OH
-
(aq) ĺ
N
3-
(g) + 3 H
+
(g) + 2 H
2
O (l) + Na
+
(aq) D. 2 H
+ (aq) + OH
-
(aq) ĺ
H
2
O (l) E. N
3-
(aq) + 4 H
+
(aq) + OH
-
(aq) ĺ
NH
3
(g) + H
2
O (l) O
O
2
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9. What is the most probable net ionic equation for the hypothetical balanced formula eqXaWion beloZ inYolYing Whe h\poWheWical elemenWV ³Q´, ³R´, ³T´, and ³X´
? 2 QR
3
(aq) + 3 T
2
X (aq) ĺ
6 TR (aq) + Q
2
X
3
(s) A. Q
3+
(aq) + X
2-
(aq) ĺ Q
2
X
3
(s) B. 2 Q
3+
(aq) + 3 X
2-
(aq) ĺ Q
2
X
3
(s) C. 2 Q
3+
(aq) + 6 T
+
(aq) ĺ 2 Q (aq) + T
6
(aq) D. 6 R
-
(aq) + 6 T
+
(aq) ĺ 6 TR (aq) E. R
-
(aq) + T
+
(aq) ĺ TR (aq) 10. What is the net ionic equation for the reaction between lead (II) nitrate and potassium iodide? A. K
+
(aq) + NO
3
-
(aq) ĺ
KNO
3
(s) B. Pb
2+
(aq) + 2 NO
3
-
(aq) ĺ
Pb(NO
3
)
2
(s) C. Pb
2+
(aq) + 2 I
-
(aq) ĺ PbI
2
(s) D. Pb
2+
(aq) + 2 K
+
(aq) + 2 NO
3
-
(aq) ĺ
Pb(NO
3
)
2
(s) + 2 K
+
(aq) E. Pb
2+
(aq) + 2 I
-
(aq)
+ 2 NO
3
-
(aq) ĺ
PbI
2
(s)
+ 2 NO
3
-
(aq) za
ties
t
GR
can
t
Gt
tree
t
3xtag
Gt
tag
t
Grice
Q2
X
is
za
the
t
3
ice
Q2
X
es
c
Pb
Glace
t2KI
ice
Pb
Iris
Zingers
O
Pb
Yee
t
2mg
lag
t
antics
t
2Itae
Pb
Ices
t
2k
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t
zig
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Pb
Iris
11. Based on the unbalanced equation below, how many liters of a 2.0 M H
3
PO
4
solution are required to react with 7.25 g of Zn? ____H
3
PO
4
(aq) + ____Zn (s) ĺ
____Zn
3
PO
4
(aq) + ____H
2
(g) liters 12. Consider the unbalanced reaction below in which an unknown concentration of H
3
PO
4
is neutralized with NaOH. If 21.50 mL of 0.400 M NaOH is required to neutralize 10.00 mL of H
3
PO
4
, what is the initial concentration of H
3
PO
4
? ____H
3
PO
4
(aq) + ____NaOH (aq) ĺ
____Na
3
PO
4
(aq) + ____H
2
O (l) M 13. Consider the unbalanced reaction below. If 30.00 mL of a 0.500 M K
2
SO
4
solution is mixed with 20.00 mL of a 0.400 M Pb(C
2
H
3
O
2
)
2
solution, and 1.813 grams of solid are collected, what is the percent yield of the reaction? ____K
2
SO
4
(aq) + ____Pb(C
2
H
3
O
2
)
2
(aq) ĺ
____KC
2
H
3
O
2
(aq) + ____PbSO
4
(s) % 2
6
2
3
0.018
7
25g
Zn
os.is
n
fifth
0.0361634
mi
it
Po
2
o
m
0.036161444rad
too
I
3
I
3
be
careful
not
to
use
the
dilution
equation
0.287
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may
neck
0.02150
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nach
Finch
0.0028167m
It
Pay
0.0028167
m
H
Ply
0.01000
L
0.28711
I
I
2
I
74.7
a
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24.2010s
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14. Remember the student from earlier in this worksheet who was cleaning out the old lab cabinet? They are almost done, but they find one more unknown bottle of solid. Based on the worn-out label, they at least know the bottle contains a hydroxide ion and an alkali metal. To deWermine Whe boWWle¶V idenWiW\, Whe\ diVVolYe
17.422 grams of the solid in water, and then neutralize Whe boWWle¶V conWenWV
using 34.00 mL of 5.00 M HCl solution. Assuming the equation provided below is balanced, what is the most probable alkali metal (³M´)
in the unknown compound? MOH (aq) + HCl (aq) ĺ
MCl (aq) + H
2
O (l) A. Li
+ B. Na
+
C. K
+
D. Rb
+
E. Cs
+ Extra Practice Problems: These questions will not be graded. 1. Approximately 6.159 grams of an unknown metal chloride compound (MCl) is dissolved in water, and then precipitated out with 106.4 mL of 0.3015 M AgNO
3
solution. Assuming the equation provided below is balanced, what is the percentage of chlorine in the unknown compound? MCl (aq) + AgNO
3
(aq) ĺ
AgCl (s) + MNO
3
(aq) % go
s.co
now
0.034004
infinity
c
mom
HCl
malt
molar
mass
molt
IIIT
102
482g
me
102.48281mi
17.01
471
85.47
21mi
male
mass
I
Mel
v
Miss
Rb
18.46
axis
mice
a
cont
int
init
c
Agno
1
1372218
g
CI
tou
g
i
mx
too
18.40
t
2. What is the net ionic equation for the reaction between Na
2
SO
4
and Cu(NO
3
)
2
? A. Na
2
SO
4
(aq) + Cu(NO
3
)
2
(aq) ĺ
CuSO
4
(aq) + 2 NaNO
3
(aq) B. Na
2
SO
4
(aq) + Cu(NO
3
)
2
(aq) ĺ
CuSO
4
(s) + 2 NaNO
3
(aq) C. 2 Na
+
(aq) +
SO
4
2-
(aq) + Cu
2+
(aq) + 2 NO
3
-
(aq) ĺ
CuSO
4
(s) + 2 Na
+
(aq) + 2 NO
3
-
(aq) D. SO
4
2-
(aq) + Cu
2+
(aq) ĺ
CuSO
4
(s) E. No net ionic equation exists g
Neeson
can
t
c
lush
as
2
Ning
he
t
c
say
as
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?
+ H-CI
Use the information provided to predict the missing organic product and draw its structure in the drawing area below. Make sure to use the same skeletal
("line") style for the structure as the rest of the equation.
Click and drag to start drawing a
structure.
X
0:0
S
sm
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A. Senyawa diatas termasuk amina primer/sekunder/tersier? Berikan alasan yang tepat!
B. Selesaikan dan lengkapi reaksi tersebut!
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Which diagram is the correct one?
What other procedure can be used to solve this problem? write down ways to solve.
first, execute plan 1 to solve the problem. Please explain every step.
Think about the way that you can use to make sure that your answer makes sense. write down your assessment.
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question help please
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Writing and Balancing Equations
Kindly answer nos. 18 - 20 in the given image.
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