FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 7: Acids and Bases

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 31

Short Answer

Review LaterAdd Note

Review Later

The buffer solution in the flask was prepared using one of the substances shown below. citric acid (pK_a 3.08) NaH₂PO₄ (pK_a 7.21) NH₄Cl (pK_a 9.25) Using the pH meter and solution shown in the image below, complete the following statements using one of the terms below. increase decrease remain constant citric acid NaH₂PO₄ NH₄Cl -If KOH were added to the buffer solution the pH of the solution would __________.

Correct Answer

verified

Show Answer

Question 32

Multiple Choice

Review LaterAdd Note

Review Later

Which of the following is true of a buffer prepared with equal concentrations of an acid and its conjugate base?

A) pH = 7
B) pH = pK_a
C) The pH depends on the concentration of the buffer.
D) none of the above

Correct Answer

verified

Show Answer

Question 33

Short Answer

Review LaterAdd Note

The buffer solution in the flask was prepared using one of the substances shown below. citric acid (pK_a 3.08) NaH₂PO₄ (pK_a 7.21) NH₄Cl (pK_a 9.25) Using the pH meter and solution shown in the image below, complete the following statements using one of the terms below. increase decrease remain constant citric acid NaH₂PO₄ NH₄Cl -The buffer solution in the beaker could be prepared using__________.

Consider the following reaction. CH₃OH(l) + CH₃OH(l) CH₃O^-(l) + CH₃OH₂⁺(l) This reaction could be classified as both an autoionization reaction and a proton transfer reaction.

Which of the following will determine the pH of a buffer made using acetic acid (HC₂H₃O₂) and sodium acetate (NaC₂H₃O₂) ?

Which of the following substances can react with both HCl and NaOH?.

Which of the following is characteristic of a buffer?

When a solution of HF (a weak acid) is added to a solution containing HPO₄^2- (here, a base) , the equation for reaction that occurs is:

Using the above table,fill in the blank with the appropriate integer (1 ,2,3,...)indicating the buffer and/or the letter indicating the formula below. -Buffer ______________________ would be the most effective buffer in basic solutions. A)H₃C₂O₄⁺ B)HC₂O₄^- C)C₃H₄O₃^2- D)HC₃H₅O₃ E)C₂H₃O₂^- F)H₂C₂H₃O₂ G)C₃H₅O₃^-

The chemical equation for the reaction of the base, ethoxide, CH₃CH₂O^-, with water would show the products:

A solution composed of HCl and NaCl would produce an effective buffer.

In an aqueous solution. the [OH^-] is 2.0 × 10^-3 M. What is the [H₃O⁺] of this solution?

NaOH and H₂SO₄ are mixed and allowed to react. How many grams of NaOH are required to neutralize 17.25 g of H₂SO₄?

Consider the following three buffer reactions. Buffer 1: protein-H⁺ and protein Buffer 2: H₂CO₃ and HCO₃^- Buffer 3: H₂PO₄^- and HPO₄^2- Fill in the blank with the appropriate integer (1,2,or 3)to indicate the buffer system described. -Buffer__________________is found in both plasma and red blood cells.

Which of the following solutions can function as a buffer?

Which of the following is most likely to be a salt?

Which of the following is excreted by the kidneys to regulate the effect of excess protein in the diet?

Consider the following reaction. + H₂O HN₃ + OH− This reaction indicates that:

Adipic acid has the formula given below. Thus substance would be classified as amphiprotic.

In converting from the pH of a solution to the corresponding H₃O⁺ concentration, the following equation should be used. [H₃O⁺] = 10^-pH