An acetic acid-sodium acetate buffer can be prepared by adding
sodium acetate to HCl(aq).
a) Write an equation for the reaction that occurs when sodium
acetate is added to HCl(aq)
b) If 10.0g of CH3COON is added to 275 mL of 0.225 M
HCl(aq), what is the pH of the resulting buffer?
c) What is the pH of the solution in part b after the addition
of 1.26g of solid NaOH?
What is the purpose of sulfuric acid, hydroxylamine
hydrochloride and sodium acetate in 1, 10-phenanthroline
determination of total iron? Also provide the balanced equation for
hydroxylamine hydrochloride in this experiment.
(NH4)2Fe(SO4)2・6H2O
is given. Sulfuric acid is used in dissolving the
(NH4)2Fe(SO4)2・6H2O
and after diluted
(NH4)2Fe(SO4)2・6H2O
is taken for specific volume and other two is added to the specific
volume of taken diluted
(NH4)2Fe(SO4)2・6H2O
solution.
What volume of a concentrated HCl solution, which is 36.0% HCl
by mass and has a density of 1.179 g/mL, should be used to make
4.95 L of an HCl solution with a pH of 1.9?
Add 10 mL of 0.1 M HCl to one liter of a 0.10 M sodium acetate
buffer, pH 6.76 (pKa = 4.76 for acetic acid). Does the pH of the
solution change? Determine the effect of the addition of 20.0 mL of
0.100 M HCl?
What is the purpose of HCl secretions? What cells secrete HCl
in the stomach?
Explain how H+ is secreted into the stomach. Fig. 21.9. If
bicarbonate (HCO3-) were not transported out of the cell, would
there be more or less H+ available to secrete?
List three hormones that are involved in the digestive process
and describe what they do.
Which of the four basic processes occur in the small intestine?
Why are the villi and microvilli important?
Which of the...
Fischer Esterification: Synthesis of Isoamyl Acetate (Banana
Oil)
4)
a) What is the role of sulfuric acid in the reaction?
b) Why is the mixture extracted with sodium bicarbonate? Your
answer should include a chemical equation to explain why gas
bubbles are observed and identify the gas.
c) What is brine and why is it used?