The figure on the right illustrates what happens when an unknown substance, HA, dissolves in H2O(l). If the concentration of HA is 0.25 M, what is the pH of the solution?
Please explain why it is choice B, thanks.
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The figure on the right illustrates what happens when an unknown
substance, HA, dissolves in H2O(l)....
A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What...
A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the hydrogen ion concentration of this solution? Answer in scientific notation and be sure to include your units. (Scientific notation: Ex. 2.4 x 103 = 2.4E3) HA(aq) + H+ (aq) + A (aq) Answer: A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the value of the acid dissociation constant, K ? Answer in scientific...
A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What...
A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the hydrogen ion concentration of this solution? Answer in scientific notation and be sure to include your units. (Scientific notation: Ex. 2.4 x 103 = 2.4E3) HA(aq) + H+(aq) + A'(aq) Answer: A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the value of the acid dissociation constant, Ka? Answer in scientific notation. Answer: A...
8. Consider what happens when Ca(OH)2, dissolves in water. Write the balanced equation for the reaction....
8. Consider what happens when Ca(OH)2, dissolves in water. Write the balanced equation for the reaction. What can we say about the size of the equilibrium constant for this reaction? What is the [OH-] in a 3.25 mM solution of calcium hydroxide? POH? d. What is the pH of the above solution? [H30]?! What is the concentration of a calcium hydroxide solution with pH = 9.25?
help with these chemistry questions 1. Explain what happens to the concentration of H,O' ions in...
help with these chemistry questions
1. Explain what happens to the concentration of H,O' ions in an acetic acid solution when solid sodium acetate is added. 2. Determine the pH and pH of a solution that is 0.5 M NaHSO4 and 0.25 M Na2SO4 3. When sodium nitrite is added to HNO2(aq) a) the equilibrium concentration of HCOOH(aq) decreases. b) the pH of the solution increases. c) the K increases. d) the pH of the solution does not change. e)...
Which of the drawings in the figure best illustrates what happens when the temperature of a helium-filled rubber balloo...
Which of the drawings in the figure best illustrates what happens when the temperature of a helium-filled rubber balloon is increased at constant pressure? (c) Choose one: C (a) o (b) 0
a OH Old Exam Question Example #2 Imagine you have a 0.125 M aqueous solution of...
a OH Old Exam Question Example #2 Imagine you have a 0.125 M aqueous solution of aspirin, an acid drug with pk, = 3.5, in equilibrium. a) Estimate the pH of the solution Hint: Determine if it is an acid or base solution, weak or strong If weak acid/base, first try (H*] = KC, or [OH-] = K,C, b) Predict what would happen to the pH when you add more H20 Hint: First figure out what happens to the concentrations...
1" . I TV a OH Imagine you have a 0.125 M aqueous solution of aspirin, an acid drug with pKa = 3.5, in equilibrium....
1" . I TV a OH Imagine you have a 0.125 M aqueous solution of aspirin, an acid drug with pKa = 3.5, in equilibrium. a) Estimate the pH of the solution Hint: Determine if it is an acid or base solution, weak or strong If weak acid/base, first try [H+] = VK.C, or [OH-] = /K,C, b) Predict what would happen to the pH when you add more H20 Hint: First figure out what happens to the concentrations HA(aq)...
1. An acid (HA) has a Ka = 4.7 x 10-6. What is the pH of...
1. An acid (HA) has a Ka = 4.7 x 10-6. What is the pH of a solution containing 0.350 M of this acid? a. 3.02 b. 2.94 c. 2.89 d. 0.60 2. For a rate law, the exponents on each concentration term ([A]x, [B]y, etc.) come from the coefficients of the balanced equation. True or False 3. The pH of a 0.025 M aquesous solution of the strong base NaOH is ____. a. 1.60 b. -12.18 c. 12.18 d....
Have I done these correctly? Which of the options below correctly describes what happens when a...
Have I done these correctly?
Which of the options below correctly describes what happens when a small amount of water is added to a buffer solution consisting of the weak acid HA its conjugate base A? a. The concentration of HA remains the same and the concentration of Hincreases. O b. The concentration of HA remains the same and the concentration of H* decreases. O c. The concentration of HA increases and the concentration of Ht remains the same. d....
- Given this concentration n ratio what is the pH (show work), Ka and percent ionization...
- Given this concentration n ratio what is the pH (show work),
Ka and percent ionization of this species
( HA+H2O← → A- + H3O+ , acid. Initial concentration: 0.01
mol/L)
HA: 9.77x10^-3 mol/L
H2O: 55.6 mol/L
A- : 2.34x10^-4 mol/L
H3O+: 2.34x10^-4 mol/L
- Also if we increase the initial concentration how does this
affect the ph n the Ka such as increasing it to .1mol/L
- is you have initial concentration of .001 if u increase
strength what...
A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the hydrogen ion concentration of this solution? Answer in scientific notation and be sure to include your units. (Scientific notation: Ex. 2.4 x 103 = 2.4E3) HA(aq) + H+ (aq) + A (aq) Answer: A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the value of the acid dissociation constant, K ? Answer in scientific...
A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the hydrogen ion concentration of this solution? Answer in scientific notation and be sure to include your units. (Scientific notation: Ex. 2.4 x 103 = 2.4E3) HA(aq) + H+(aq) + A'(aq) Answer: A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the value of the acid dissociation constant, Ka? Answer in scientific notation. Answer: A...
8. Consider what happens when Ca(OH)2, dissolves in water. Write the balanced equation for the reaction. What can we say about the size of the equilibrium constant for this reaction? What is the [OH-] in a 3.25 mM solution of calcium hydroxide? POH? d. What is the pH of the above solution? [H30]?! What is the concentration of a calcium hydroxide solution with pH = 9.25?
help with these chemistry questions
1. Explain what happens to the concentration of H,O' ions in an acetic acid solution when solid sodium acetate is added. 2. Determine the pH and pH of a solution that is 0.5 M NaHSO4 and 0.25 M Na2SO4 3. When sodium nitrite is added to HNO2(aq) a) the equilibrium concentration of HCOOH(aq) decreases. b) the pH of the solution increases. c) the K increases. d) the pH of the solution does not change. e)...
Which of the drawings in the figure best illustrates what happens when the temperature of a helium-filled rubber balloon is increased at constant pressure? (c) Choose one: C (a) o (b) 0
a OH Old Exam Question Example #2 Imagine you have a 0.125 M aqueous solution of aspirin, an acid drug with pk, = 3.5, in equilibrium. a) Estimate the pH of the solution Hint: Determine if it is an acid or base solution, weak or strong If weak acid/base, first try (H*] = KC, or [OH-] = K,C, b) Predict what would happen to the pH when you add more H20 Hint: First figure out what happens to the concentrations...
1" . I TV a OH Imagine you have a 0.125 M aqueous solution of aspirin, an acid drug with pKa = 3.5, in equilibrium. a) Estimate the pH of the solution Hint: Determine if it is an acid or base solution, weak or strong If weak acid/base, first try [H+] = VK.C, or [OH-] = /K,C, b) Predict what would happen to the pH when you add more H20 Hint: First figure out what happens to the concentrations HA(aq)...
Have I done these correctly?
Which of the options below correctly describes what happens when a small amount of water is added to a buffer solution consisting of the weak acid HA its conjugate base A? a. The concentration of HA remains the same and the concentration of Hincreases. O b. The concentration of HA remains the same and the concentration of H* decreases. O c. The concentration of HA increases and the concentration of Ht remains the same. d....
- Given this concentration n ratio what is the pH (show work),
Ka and percent ionization of this species
( HA+H2O← → A- + H3O+ , acid. Initial concentration: 0.01
mol/L)
HA: 9.77x10^-3 mol/L
H2O: 55.6 mol/L
A- : 2.34x10^-4 mol/L
H3O+: 2.34x10^-4 mol/L
- Also if we increase the initial concentration how does this
affect the ph n the Ka such as increasing it to .1mol/L
- is you have initial concentration of .001 if u increase
strength what...
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