Homework Answers
HNO3 is an ionic compound on the other hand HC2H3O2 is a covalent compound and does not dissociate in aqueous solution, hence it will be weaker acid as compare to HNO3 which gets completely dissociate in aqueous solution.
hence, HC2H3O2 will have higher pH because it is weaker acid
hence option B is correct
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Question 8 1 pts The pH of two separate solutions, 1.0M HNO3 and 1.0 M HC,H20,...
The pH of two separate solutions, 1.0 M HNO3 and 1.0M HC H302, are measured. Which...
The pH of two separate solutions, 1.0 M HNO3 and 1.0M HC H302, are measured. Which statement is true? The HNO3 has a higher pH because it is a strong acid. The HC2H302 has a higher pH because it is a weak acid, The HC2H302 has a higher pH because it has more acidic hydrogen atoms. The HC H30, has a lower pH because it has more acidic hydrogen atoms. The two solutions have the same pH because the concentrations...
Blank 4: CO3A2- Question 3 (4 points) When acids flex their muscles: Given that HNO3 is...
Blank 4: CO3A2- Question 3 (4 points) When acids flex their muscles: Given that HNO3 is a strong acid and HNO2 is a weak acid, state which of the following statements is true. There are between 1 and 4 correct answers. a A1 M solution of HNO, would have a lower pH than a 1 M solution of HNO2. A1 M solution of HNO3 would have a higher pH than a 1 M solution of HNO2. Ob OC HNO, is...
DATA AND CALCULATIONS A. pH of Acid Solutions: 1. Strong Acid [HCI), [HCI), 2. 21 Measured pH Molarity Calculated p...
DATA AND CALCULATIONS A. pH of Acid Solutions: 1. Strong Acid [HCI), [HCI), 2. 21 Measured pH Molarity Calculated pH 2. Weak Acid [HC,H,O,1 2.92 [HC,H,0,12 3.45 Measured pH Molarity Calculated pH Compare and explain the observed values of pH for these two acids. Which acid pH changed the most on dilution? Explain why (consider the equilibrium occurring)
EQUL 499- Det. Of pH of Strong Acid, weak acid, salt, and buffer solution Discussion Topics...
EQUL 499- Det. Of pH of Strong Acid, weak acid, salt, and buffer solution Discussion Topics Discussion Topics (need to submit in Blackboard): 1. What is a buffer? • A buffer is a solution that, when introduced to a new environment, undergoes minimal pH change, typically when adding acidic or basic solutions. These are extremely important for life because the pH of human blood is delicate and even if it is changed by 0.1, there may be catastrophic effects. 2....
1 pts Question 7 Consider a weak acid in a solution with a pH of 5.0....
1 pts Question 7 Consider a weak acid in a solution with a pH of 5.0. Which of the following statements is true? O The weak acid is a proton acceptor O The weak acid has a lower affinity for its proton than does a strong acid. At its pKa, the weak acid will be totally dissociated. O The [H+] is 107M.
1. Calculate the equilibrium concentrations of all species present and the pH of a solution obtained...
1. Calculate the equilibrium concentrations of all species present and the pH of a solution obtained by adding 0.100 moles of solid NaOH to 1.00 L of 15.0 M NH3. Kb = 1.8 × 10–5 2. One mole of a weak acid HA was dissolved in 2.0 L of water. After the system had come to equilibrium, the concentration of HA was found to be 0.45 M. Calculate the Ka for this weak acid. 3. Calculate the pH of a...
Answer all three please. The two following choices for the bottom one are:1. solutions containing only...
Answer all three please. The two following choices for the bottom
one are:1. solutions containing only 10mM acetic acid or acetate
cannot serve as buffers 2. The 10mM acetic acid solution acetic
acid is a weak acid
End of Chapter, Problem 62 Which would be a more effective buffer at pH 5.0 (see Table 2.4)? 10 mM acetic acid buffer or 10 mM HEPES buffer The 10 mM HEPES buffer because its pK is higher than the desired pH. The...
7. Which of the two solutions below has a higher buffering capacity? Explain why one solution...
7. Which of the two solutions below has a higher buffering capacity? Explain why one solution has a better ability to resist changes in pH. (Hint: Consider what makes a good buffer and pay special attention to the arrows used in the reactions.) Solution A: This solution is prepared by combining equal amounts of a weak acid with ts conjugate base, resulting in the expression below: Solution B: This solution is prepared by combining equal amounts of a strong acid...
explain ou are given us solutions of the following at 25°C. Predict whether each solution will...
explain ou are given us solutions of the following at 25°C. Predict whether each solution will be acidic, basic, (a) posm at, KC,H,O, The cation, K", belongs to group 1 of the periodic table and will not affect the pH. The anion, C,H,O, solution of potassium acetate --Sec . weak acid and will act as a base, making a (b) barum chlorate, Balco), The cation Therefore, belongs to grove 2 of the periodic table and will not affect the p....
This is from a Study of Buffer Solutions and pH of Salt Solutions Lab. I calculated...
This is from a Study of Buffer Solutions and pH of Salt
Solutions Lab. I calculated Ka to be 3.2*10^-5. Why is my value
larger than the standard value?
Procedure:
10. How does your calculated value of Ka compare with the standard value of Ka for acetic acid? Discuss why your value may be larger or smaller than the standard value. Caleutats Ka 3.2x 10-5) Cyato-s Learning Objectives: 1. To test the acidic and basic properties of ionic compounds 2....
The pH of two separate solutions, 1.0 M HNO3 and 1.0M HC H302, are measured. Which statement is true? The HNO3 has a higher pH because it is a strong acid. The HC2H302 has a higher pH because it is a weak acid, The HC2H302 has a higher pH because it has more acidic hydrogen atoms. The HC H30, has a lower pH because it has more acidic hydrogen atoms. The two solutions have the same pH because the concentrations...
Blank 4: CO3A2- Question 3 (4 points) When acids flex their muscles: Given that HNO3 is a strong acid and HNO2 is a weak acid, state which of the following statements is true. There are between 1 and 4 correct answers. a A1 M solution of HNO, would have a lower pH than a 1 M solution of HNO2. A1 M solution of HNO3 would have a higher pH than a 1 M solution of HNO2. Ob OC HNO, is...
DATA AND CALCULATIONS A. pH of Acid Solutions: 1. Strong Acid [HCI), [HCI), 2. 21 Measured pH Molarity Calculated pH 2. Weak Acid [HC,H,O,1 2.92 [HC,H,0,12 3.45 Measured pH Molarity Calculated pH Compare and explain the observed values of pH for these two acids. Which acid pH changed the most on dilution? Explain why (consider the equilibrium occurring)
EQUL 499- Det. Of pH of Strong Acid, weak acid, salt, and buffer solution Discussion Topics Discussion Topics (need to submit in Blackboard): 1. What is a buffer? • A buffer is a solution that, when introduced to a new environment, undergoes minimal pH change, typically when adding acidic or basic solutions. These are extremely important for life because the pH of human blood is delicate and even if it is changed by 0.1, there may be catastrophic effects. 2....
1 pts Question 7 Consider a weak acid in a solution with a pH of 5.0. Which of the following statements is true? O The weak acid is a proton acceptor O The weak acid has a lower affinity for its proton than does a strong acid. At its pKa, the weak acid will be totally dissociated. O The [H+] is 107M.
Answer all three please. The two following choices for the bottom
one are:1. solutions containing only 10mM acetic acid or acetate
cannot serve as buffers 2. The 10mM acetic acid solution acetic
acid is a weak acid
End of Chapter, Problem 62 Which would be a more effective buffer at pH 5.0 (see Table 2.4)? 10 mM acetic acid buffer or 10 mM HEPES buffer The 10 mM HEPES buffer because its pK is higher than the desired pH. The...
7. Which of the two solutions below has a higher buffering capacity? Explain why one solution has a better ability to resist changes in pH. (Hint: Consider what makes a good buffer and pay special attention to the arrows used in the reactions.) Solution A: This solution is prepared by combining equal amounts of a weak acid with ts conjugate base, resulting in the expression below: Solution B: This solution is prepared by combining equal amounts of a strong acid...
explain ou are given us solutions of the following at 25°C. Predict whether each solution will be acidic, basic, (a) posm at, KC,H,O, The cation, K", belongs to group 1 of the periodic table and will not affect the pH. The anion, C,H,O, solution of potassium acetate --Sec . weak acid and will act as a base, making a (b) barum chlorate, Balco), The cation Therefore, belongs to grove 2 of the periodic table and will not affect the p....
This is from a Study of Buffer Solutions and pH of Salt
Solutions Lab. I calculated Ka to be 3.2*10^-5. Why is my value
larger than the standard value?
Procedure:
10. How does your calculated value of Ka compare with the standard value of Ka for acetic acid? Discuss why your value may be larger or smaller than the standard value. Caleutats Ka 3.2x 10-5) Cyato-s Learning Objectives: 1. To test the acidic and basic properties of ionic compounds 2....
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