Which of the following solutions contains the highest [H3O+] ? A) A concentrated solution of a...
Which of the following solutions contains the highest [H3O+] ?
A) A concentrated solution of a weak acid
B) a dilute solution of strong acid
C) a dilute solution of a weak acid
D) we cannot tell from the information given
Homework Answers
a dilute solution of weak acid give highest cocn of H+ ION because i can dissociate fully and give maximum conc of H+ while weak acid even high conc give less H+ because less dissociation constant
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Which of the following solutions contains the
highest [H3O+] ?
A) A concentrated solution of a...
QUESTION 4 Which of the following statements about dilute and concentrated solutions is true? a. Concentrated...
QUESTION 4 Which of the following statements about dilute and concentrated solutions is true? a. Concentrated solutions have large amounts solvents compared to solutes b. Concentrated solutions have small amounts of solutes compared to solvents Dilute solutions have a large amount of solute compared to solvents! Dilute solutions have a small amount of solutes compared to solvents
HCl is a strong acid. What is the [H3O+] in a 0.100 M solution of HCl?...
HCl is a strong acid. What is the [H3O+] in a 0.100 M solution of HCl? 0.0500 M 0.00100 M 0.100 M Cannot be determined from the information given
Which of these two solutions has the higher pH? Circle your choice. a) i) a...
Which of these two solutions has the higher pH? Circle your choice. a) i) a 0.15 M solution of a weak acid OR ii) a 0.015 M solution of the same acid. b) The best explanation for my answer to a) is (choose the correct number from 1 - 5):_________ 1. pH of weak acids are always high. 2. it contains more H3O+ ions than the other concentration. 3. the lower the concentration, the lower the H3O+...
9) Which one of the following pairs cannot be mixed together to form a buffer solutions...
9) Which one of the following pairs cannot be mixed together to form a buffer solutions A) KOH, HNO2 B) H2S03. KHSO3 C) HONH2, HONH3CI D) NaCI, HCI E) RbOH, HF 10) The Henderson-Hasselbalch equation is acid) acid] A) pH- pKa log basel base] D) pH - pKaobase [acid 11) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant Kp for A- A) A (aq) H30+ (aq) HA (aq) H20 0) B) HA (aq) + OH-(aq) 근...
Given initially equimolar solutions of each of the following weak acids, which solution will have the...
Given initially equimolar solutions of each of the following weak acids, which solution will have the highest hydrogen ion concentration once equilibrium is established? a. H2O b. HClO2 c. HF d. HClO
7. The pH = -log[+] for a solution. The pOH = -log[OH-] for a solution. The...
7. The pH = -log[+] for a solution. The pOH = -log[OH-] for a solution. The pH and pH are related and their sum is equal to 14 (pH + pOH = 14). If the concentration of a dilute solution of potassium hydroxide is 0.001 M, what is the pH of that solution? 8. Citric acid is produced by oranges. When citric acid dissolves in water, it produces a relatively small number of hydronium ions. Citric acid is best described...
A chemistry laboratory contains solutions of hydrochloric acid at the following concentrations: 2.0M,5.5 M, 8.0 M,...
A chemistry laboratory contains solutions of hydrochloric acid at the following concentrations: 2.0M,5.5 M, 8.0 M, and 11.65 M. 1st attempt Part 1 (1 point) See Periodic Table See Hint Which is the most concentrated solution? Choose one: O A 8.0 M HCI OB. 5.5 MHCI O C. 11.65 MHCI OD 2.0MHCI Part 2 (1 point) Which is the most dilute solution? Choose one: O A. 11.65 M HCI OB. 5.5 M HCI OC. 2.0 M HCI O D. 8.0...
2. Calculate the pH of the following solutions: (a) [H3O+] = 1.4 x 10-'M (b) [OH-]...
2. Calculate the pH of the following solutions: (a) [H3O+] = 1.4 x 10-'M (b) [OH-] = 3.5 x 10-2M (c) pOH = 10.5 3. What is the pH of a 0.10 M solution of HCIO4? (A strong acid) 4. Write the dissociation reaction and the corresponding K, expression for the following acids in water. (a) H3PO4 (b) C&H OH 5. Write the reaction and corresponding Ko expression for each of the following bases in water. (a) NH3 (b) PO4...
questions are in red Consider the following salt solutions: (i) NH4Cl – NH+ + C- Notice...
questions are in red
Consider the following salt solutions: (i) NH4Cl – NH+ + C- Notice that as a salt, NH,Cl dissociates completely in solution. So, what are the parents of this salt? The cation, NH, in this case, is from the base obtained by adding enough OHto balance the positive charge(s) on the cation; Viz, NH,OH. Similarly, the anion, Cl. comes from the acid. So the parent acid can be obtained by adding enough Hi to neutralize the charge...
Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa =...
Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa = 4.75) B) HF (PK:= 3.45) C) H3PO4 (pKal = 2.12) D) HCIQ (Ka=2.00) E) Since all are acids, the pH is the same for all solutions. 5. Which one of the following salts gives an acidic aqueous solution? A) CsNO3 B) CaCl2C ) LiF D) Cr(CIO4)3 E) NaCH3CO2 6. 7. All of the following are strong acids except A) HCIQB) HC104 C) HI D)...
QUESTION 4 Which of the following statements about dilute and concentrated solutions is true? a. Concentrated solutions have large amounts solvents compared to solutes b. Concentrated solutions have small amounts of solutes compared to solvents Dilute solutions have a large amount of solute compared to solvents! Dilute solutions have a small amount of solutes compared to solvents
9) Which one of the following pairs cannot be mixed together to form a buffer solutions A) KOH, HNO2 B) H2S03. KHSO3 C) HONH2, HONH3CI D) NaCI, HCI E) RbOH, HF 10) The Henderson-Hasselbalch equation is acid) acid] A) pH- pKa log basel base] D) pH - pKaobase [acid 11) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant Kp for A- A) A (aq) H30+ (aq) HA (aq) H20 0) B) HA (aq) + OH-(aq) 근...
7. The pH = -log[+] for a solution. The pOH = -log[OH-] for a solution. The pH and pH are related and their sum is equal to 14 (pH + pOH = 14). If the concentration of a dilute solution of potassium hydroxide is 0.001 M, what is the pH of that solution? 8. Citric acid is produced by oranges. When citric acid dissolves in water, it produces a relatively small number of hydronium ions. Citric acid is best described...
A chemistry laboratory contains solutions of hydrochloric acid at the following concentrations: 2.0M,5.5 M, 8.0 M, and 11.65 M. 1st attempt Part 1 (1 point) See Periodic Table See Hint Which is the most concentrated solution? Choose one: O A 8.0 M HCI OB. 5.5 MHCI O C. 11.65 MHCI OD 2.0MHCI Part 2 (1 point) Which is the most dilute solution? Choose one: O A. 11.65 M HCI OB. 5.5 M HCI OC. 2.0 M HCI O D. 8.0...
2. Calculate the pH of the following solutions: (a) [H3O+] = 1.4 x 10-'M (b) [OH-] = 3.5 x 10-2M (c) pOH = 10.5 3. What is the pH of a 0.10 M solution of HCIO4? (A strong acid) 4. Write the dissociation reaction and the corresponding K, expression for the following acids in water. (a) H3PO4 (b) C&H OH 5. Write the reaction and corresponding Ko expression for each of the following bases in water. (a) NH3 (b) PO4...
questions are in red
Consider the following salt solutions: (i) NH4Cl – NH+ + C- Notice that as a salt, NH,Cl dissociates completely in solution. So, what are the parents of this salt? The cation, NH, in this case, is from the base obtained by adding enough OHto balance the positive charge(s) on the cation; Viz, NH,OH. Similarly, the anion, Cl. comes from the acid. So the parent acid can be obtained by adding enough Hi to neutralize the charge...
Which of the following 0.10 M aqueous solutions gives the highest pH? A) CH3COOH (pKa = 4.75) B) HF (PK:= 3.45) C) H3PO4 (pKal = 2.12) D) HCIQ (Ka=2.00) E) Since all are acids, the pH is the same for all solutions. 5. Which one of the following salts gives an acidic aqueous solution? A) CsNO3 B) CaCl2C ) LiF D) Cr(CIO4)3 E) NaCH3CO2 6. 7. All of the following are strong acids except A) HCIQB) HC104 C) HI D)...
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