b) Weak Acids and Bases HC H3O2 solutions Solution NH3 solutions Solution Molarity pH Molarity pH 2,43 3,00 3.65 1 101 273 3 3 Compare the pH measurements of 0.1 M HCl and 0.1 M HC2H3O2. How do these measurements show that HCl is a stronger acid than HC2H3O2? The when diluting Ph doesnt move that much Show how you can use two of your measurements to show that NaOH is a stronger base than NH3. when diluting NaOH the move that much + retained basic Ph Pn didnf Use the pH measurement you made for each HC2H3O2 solution to calculate a value of Ka and of pKa for HC2H3O2. Are all 3 of the pKa values you calculated similar? Show all calculations on an attached sheet of paper. Use the pH measurement you made for each NH3 solution to calculate a value of Kb and of pKh for NH3. Are all 3 of the pK, values you calculated similar? Show all calculations on an attached sheet of paper. 55

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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Can you do ones of each of the bottom questions? I'm having trouble starting and if I have a base for it I can do it! Anything helps thanks
Lab 22
Acids, Bases, Buffers and Salts
Report Sheet
Name Alexandra Tobin
Lab Day March 25.
Part I: Effect of Diluting acids and bases:
a) Strong Acids and Bases
HCl solutions
Solution
NaOH solutions
Solution
Molarity
pH
Molarity
pH
12.58
. 83
10.36
1
293
.001
3
b) Weak Acids and Bases
HC H;O2 solutions
Solution
NH3 solutions
Solution
Molarity
pH
Molarity
pH
2.43
3,00
3.65
1
0.83
3
9.73
3
Compare the pH measurements of 0.1 M HCl and 0.1 M HC2H3O2. How do these
measurements show that HCl is a stronger acid than HC2H3O2?
The
Ph doesnt move
that much
wnen diluting
Show how you can use two of your measurements to show that NaOH is a stronger base
than NH3.
when diluting
NaOH
Pn didnf
the
move that
much
+ retain ed basic Ph
Use the pH measurement you made for each HC2H3O2 solution to calculate a value of Ka
and of pKa for HC2H3O2. Are all 3 of the pKa values you calculated similar? Show all
calculations on an attached sheet of paper.
Use the pH measurement you made for each NH3 solution to calculate a value of K and
of pKh for NH3. Are all 3 of the pK, values you calculated similar? Show all calculations
on an attached sheet of paper.
55
Transcribed Image Text:Lab 22 Acids, Bases, Buffers and Salts Report Sheet Name Alexandra Tobin Lab Day March 25. Part I: Effect of Diluting acids and bases: a) Strong Acids and Bases HCl solutions Solution NaOH solutions Solution Molarity pH Molarity pH 12.58 . 83 10.36 1 293 .001 3 b) Weak Acids and Bases HC H;O2 solutions Solution NH3 solutions Solution Molarity pH Molarity pH 2.43 3,00 3.65 1 0.83 3 9.73 3 Compare the pH measurements of 0.1 M HCl and 0.1 M HC2H3O2. How do these measurements show that HCl is a stronger acid than HC2H3O2? The Ph doesnt move that much wnen diluting Show how you can use two of your measurements to show that NaOH is a stronger base than NH3. when diluting NaOH Pn didnf the move that much + retain ed basic Ph Use the pH measurement you made for each HC2H3O2 solution to calculate a value of Ka and of pKa for HC2H3O2. Are all 3 of the pKa values you calculated similar? Show all calculations on an attached sheet of paper. Use the pH measurement you made for each NH3 solution to calculate a value of K and of pKh for NH3. Are all 3 of the pK, values you calculated similar? Show all calculations on an attached sheet of paper. 55
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