Acids:BasesLab2024
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Feb 20, 2024
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Neutralization of Acids and Bases Ulani Rizo January 24, 2024
Ulani Rizo Neutraliza/on of Acids and Bases Page of 2
8
CHM 113 POST-LAB Neutralization of Acids and Bases 1.
Insert ONE picture of yourself in full PPE here (
include the pH test strip key in your PPE picture
). **Remember to (1) show your full body so that we see you are wearing shoes; (2) wear your safety glasses, full sleeved clothes, and gloves; (3) cover your arms, lower legs and ankles (socks are required, even in Arizona); (4) tie back long hair in a ponytail or a bun; (5) remove jewelry.
Ulani Rizo Neutraliza/on of Acids and Bases Page of 3
8
2.
Enter your data for your pH measurements of the neutralization of sodium bicarbonate (Table 1) below. NOTE: Your table should contain pH values and pictures of pH test strips for “A,” “C” and six trials with beaker “B.” Please include the pH Test Strip Key
in your photos for comparison.
If you needed to repeat this experiment or for any other reason you used pH test strips purchased from another source (other than eScience), you MUST provide the pH test strip key below the table. Table 1: pH Measurements
Trial
pH
Picture of pH Test Strip B1 – B6 (for Beaker B)
B1 9
Picture of pH Paper A pH: ___7___
B2 8
B3 7
B4 7
Picture of pH Paper C pH: ___5___
B5 6
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Related Questions
Chrome
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File
b Answered: Calculate the x
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MgBr
1)
1) H
MgCI
人,
`MgBr
1)
H.
2) Acid workup
2) Acid workup
2) H*
MgBr
1) CHMg3r
2) Acid vorkp
2) H3O*
2) H*
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2
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I need help finding the log and pH.
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Need help with number 3 please!
I used milk of magnesia PH of 8.92 (after dilution)
Vinegar PH of 4.0 (after dilution
Gatorade PH of 4.38 (after dilution)
Listerene PH of 6.05 (after dilution)
Lemon juice PH of 3.40 (after dilution)
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1. What is the pH of a solution with 0.46 M lactic acid and 0.07 M sodium lactate? Include 3 sig figs in your answer.
Round your answer to 2 decimal places.
2. What is the pH of a solution with 0.69 M pyruvic acid and 0.13 M sodium pyruvate? Include 3 sig figs in your answer.
Round your answer to 2 decimal places.
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Student are adding 10 drops of 1M HCI to 10 drops of 1M NaOH to
show neutralization. The results of two students are below.
Test Results
Group A
Group B
- ... SI
Red Litmus
Red
Red
Blue Litmus
Blue
Red
рH раper
7.
phenolphthalein
clear
clear
Which group's results are incorrect and what mistake did they most likely
make?
dentify e
a) Group B is incorrect and they most likely added too much acid.
try ...
the strong ac
b) Group B is incorrect and they most likely added too little acid.
c) Group A is incorrect and they most likely added too little acid.
11:48 AM
4/23/2021
Insert
Delete
PrtSc
F11
F12
F9
F10
Backspace
Num
Lock
8
7
8
PgUp
Home
4.
Enter
6
K
1
Shift
2
+ ||
* C0
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Can you please help me find these 3
final volume of buret (ml) , volume of naOH (ml) and molar out of acetic acid (M)
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Pls help ASAP. Pls help on both.
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2. For the chemical equilibrium below:
CH3CH2NH2 + H2O CH3CH2NH3* + OH
Ka = 2.31 x 10-"
a. Write the base dissociation constant expression (Kb).
b. Calculate the base dissociation constant (Kb).
c. Calculate the hydroxide ion concentration in 0.100 M Ethylamine (CH3CH2NH2) at 25 °C.
d. Calculate the hydronium ion concentration in 0.100 M Ethylamine (CH3CH2NH2) acid at 25
°C.
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PLEASE PLACE THE ANSWERS IN A SQUARE BOXES SAME AS THE QUESTION. SO I COULD KNOW WHICH ANSWERS BELONGS TO THE RIGHT PLACE.
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For phosphoric acid, H3PO4, the Ka₁ =
A. [PO][H¹+]/[H₂PO4]
B. [HPO][H] / [H₂PO4]
C. [H₂PO4¹][H] / [H₂PO4]
D. [H3PO4]/[H₂PO4¹-][H¹+]
E. [H3PO4]/[PO4³-][H¹+]³
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Im doing a lab report on the creation of soap through the saponification process, and am currently figuring out a second source of error to include. The ph value of the soap I created is ph8. According to multiple websites, the normal ph value for homemade soaps is around 9-10. What source of error woudlve caused the ph of my soap to be lower?
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Use the graph below to answer the following questions. Provide a short reasoning for your
answers.
13
11
9
pH 7
5
3
1
5
10 15
20
Volume added (mL)
a. Determine if the acids/bases are strong or weak.
b. Was the acid or base added from the burette? (-
c. Find the volume required to reach the equivalence point. (
25
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helpppppppppppppppppppppppppppppppp
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dentFunctions/Interface/acellus_engine.html?C
DH and OH- Calculations
cids and Bases
What is the [OH ] in a solution
with a pOH of 6.48?
[OH ] = [ ? ] × 10 *1
Coefficient (green)
Exponent (yellow)
Enter
us Corporation. All Rights Reserved.
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Tube #
1
2
3
*4
Initial
Phenol Red
Color
Yellow
Red
Yellow
Contents
Red
Nothing
Foil
Elodea
Elodea +
Foil
Initial pH
7- Low
PH
7- Hight
pH
7- low
Final Color
7- low
yellow
red
red
Final
pH
3-
acidic
7-
basic
7-
basic
Orange/yellow
2. Use the "Initial pH" and "Final pH" data from the table above to construct a bar
graph in the box below. Make sure to include the following: a title, axis titles, tick
marks, and a graph legend to distinguish between the two datasets.
4-
acidic
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Please answer the 3 boxes for ph
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Related Questions
- Chrome ← → C Food Apple juice Soy milk Tuna (canned) esc Edit File b Answered: Calculate the xarrow_forwardMgBr 1) 1) H MgCI 人, `MgBr 1) H. 2) Acid workup 2) Acid workup 2) H* MgBr 1) CHMg3r 2) Acid vorkp 2) H3O* 2) H*arrow_forward2arrow_forwardI need help finding the log and pH.arrow_forwardNeed help with number 3 please! I used milk of magnesia PH of 8.92 (after dilution) Vinegar PH of 4.0 (after dilution Gatorade PH of 4.38 (after dilution) Listerene PH of 6.05 (after dilution) Lemon juice PH of 3.40 (after dilution)arrow_forward1. What is the pH of a solution with 0.46 M lactic acid and 0.07 M sodium lactate? Include 3 sig figs in your answer. Round your answer to 2 decimal places. 2. What is the pH of a solution with 0.69 M pyruvic acid and 0.13 M sodium pyruvate? Include 3 sig figs in your answer. Round your answer to 2 decimal places.arrow_forwardStudent are adding 10 drops of 1M HCI to 10 drops of 1M NaOH to show neutralization. The results of two students are below. Test Results Group A Group B - ... SI Red Litmus Red Red Blue Litmus Blue Red рH раper 7. phenolphthalein clear clear Which group's results are incorrect and what mistake did they most likely make? dentify e a) Group B is incorrect and they most likely added too much acid. try ... the strong ac b) Group B is incorrect and they most likely added too little acid. c) Group A is incorrect and they most likely added too little acid. 11:48 AM 4/23/2021 Insert Delete PrtSc F11 F12 F9 F10 Backspace Num Lock 8 7 8 PgUp Home 4. Enter 6 K 1 Shift 2 + || * C0arrow_forwardCan you please help me find these 3 final volume of buret (ml) , volume of naOH (ml) and molar out of acetic acid (M)arrow_forwardPls help ASAP. Pls help on both.arrow_forward2. For the chemical equilibrium below: CH3CH2NH2 + H2O CH3CH2NH3* + OH Ka = 2.31 x 10-" a. Write the base dissociation constant expression (Kb). b. Calculate the base dissociation constant (Kb). c. Calculate the hydroxide ion concentration in 0.100 M Ethylamine (CH3CH2NH2) at 25 °C. d. Calculate the hydronium ion concentration in 0.100 M Ethylamine (CH3CH2NH2) acid at 25 °C.arrow_forwardPLEASE PLACE THE ANSWERS IN A SQUARE BOXES SAME AS THE QUESTION. SO I COULD KNOW WHICH ANSWERS BELONGS TO THE RIGHT PLACE.arrow_forwardFor phosphoric acid, H3PO4, the Ka₁ = A. [PO][H¹+]/[H₂PO4] B. [HPO][H] / [H₂PO4] C. [H₂PO4¹][H] / [H₂PO4] D. [H3PO4]/[H₂PO4¹-][H¹+] E. [H3PO4]/[PO4³-][H¹+]³arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
Recommended textbooks for you
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
Chemistry: The Molecular Science
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ISBN:9781285199047
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Publisher:Cengage Learning