Question
In: Chemistry
Why is a direct titration of the acetlysalicylic acid in the tablet with sodium hydroxide not...
Why is a direct titration of the acetlysalicylic acid in the tablet with sodium hydroxide not performed?
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Acetylsalicylic acid is a diprotic acid, so a single end point is not possible |
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Acetylsalicylic acid is a weak acid and does not react very well with sodium hydroxide. |
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Acetylsalicylic acid is unstable in the presence of sodium hydroxide and will undergo decomposition releasing toxic benzene - to which we do not want our students exposed. |
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Acetylsalicylic acid undergoes more than one reaction with sodium hydroxide and will not react fast enough in a normal titration. |
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
For the titration of 0.20M formic acid with 0.36M sodium hydroxide: a) find the pH at...
For the titration of 0.20M formic acid with 0.36M sodium
hydroxide:
a) find the pH at the equivalence point
b) find the pH at some volume past the equivalence point
c) sketch the titration curve
For the titration of 0.20M formic acid with 0.36M sodium hydroxide: a) find the pH at...
For the titration of 0.20M formic acid with 0.36M sodium
hydroxide:
a) find the pH at the equivalence point
b) find the pH at some volume past the equivalence point
c) sketch the titration curve
A chemist needs to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide...
A chemist needs to determine the concentration of a sulfuric
acid solution by titration with a standard sodium hydroxide
solution. He has a 0.1799 M standard sodium hydroxide solution. He
takes a 25.00 mL sample of the original acid solution and dilutes
it to 250.0 mL. Then, he takes a 10.00 mL sample of the dilute acid
solution and titrates it with the standard solution. The endpoint
was reached after the addition of 14.33 mL of the standard
solution. What...
For the titration of 50.0 mL of 0.150 M acetic acid with 0.100 M sodium hydroxide,...
For the titration of 50.0 mL of 0.150 M acetic acid with 0.100 M
sodium hydroxide, determine the pH when:
(a) 50.0 mL of base has been added.
(b) 75.0 mL of base has been added.
(c) 100.0 mL of base has been added.
For the titration of 40.0 mL of 0.200 M acetic acid with 0.150 M sodium hydroxide,...
For the titration of 40.0 mL of 0.200 M acetic acid with 0.150 M
sodium hydroxide, determine the pH when:
(a) 40.0 mL of base has been added.
(b) 53.3 mL of base has been added.
(c) 66.6 mL of base has been added.
For the titration of 25.0 mL of 0.20 M hydrofluoric acid with 0.20 M sodium hydroxide...
For the titration of 25.0 mL of 0.20 M hydrofluoric acid with
0.20 M sodium hydroxide , determine the volume of based added when
pH is a) 2.85 b) 3.15 c)11.89
A solution of sodium hydroxide was neutralized by sulfuric acid. The volume of sodium hydroxide solution...
A solution of sodium hydroxide was neutralized by sulfuric acid.
The volume of sodium hydroxide solution used was 675.0 mL, and the
concentration was 0.875 M. Calculate the moles of sulfuric acid
that were neutralized (assuming that the reaction goes to
completion). Give your answer to three significant figures. 2NaOH
(aq) + H2SO4 (aq) ? Na2SO4 (aq) + 2H2O (l
A student performs a titration of 50.0mL o 0.100M hydrofluoric acid, using 0.050 M sodium hydroxide....
A student performs a titration of 50.0mL o 0.100M hydrofluoric
acid, using 0.050 M sodium hydroxide. The Ka for hydrofluoric acid
is 8.8x10^-5
a) What is the pH of the solution after the addition of 20.0 mL
of sodium hydroxide solution?
b) How many milliliters of NaOh are required to reach the
equivalence point?
c) Write the chemical reaction that will determine the pH of the
solution at the equivalence point.
d) What is the pH at the equivalence point
Doc Inmaking does a titration using sodium hydroxide (NaOH) and sulfuric acid (H2SO4). He pipets 20.00...
Doc Inmaking does a titration using sodium hydroxide (NaOH) and
sulfuric acid (H2SO4). He pipets 20.00 mL of H2SO4 solution into
the Erlenmeyer flask and adds two drops of phenolphthalein. He does
the titration using 0.5000 M NaOH. The initial buret reading is
0.70 mL and the final buret reading is 35.23 mL. Write the balanced
chemical equation for sodium hydroxide reacting with sulfuric acid
to produce sodium sulfate and water. Determine the mole ratio
between the acid and the...
1. An aqueous solution of sodium hydroxide is standardized by titration with a 0.108 M solution...
1. An aqueous solution of sodium hydroxide is
standardized by titration with a 0.108 M solution
of perchloric acid.
If 17.0 mL of base are required to neutralize
29.4 mL of the acid, what is the molarity of the
sodium hydroxide solution?
______ M sodium hydroxide
2. An aqueous solution of
potassium hydroxide is standardized by titration
with a 0.130 M solution of nitric
acid.
If 23.3 mL of base are required to neutralize
15.8 mL of the acid, what...
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