Which statement describes the action of a buffer composed of citric acid (H3C6H5O7) and sodium citrate...
Which statement describes the action of a buffer composed of citric acid (H3C6H5O7) and sodium citrate (NaH2C6H5O7)?
a)Both components, citric acid and sodium citrate, neutralize added base.
b)Both components, citric acid and sodium citrate, neutralize added acid.
c)Citric acid neutralizes added base, and sodium citrate neutralizes added acid.
d)Sodium citrate neutralizes added base, and citric acid neutralizes added acid.
Homework Answers
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Which statement describes the action of a buffer composed of
citric acid (H3C6H5O7) and sodium citrate...
Citric acid (H3C6H5O7) a triprotic acid, reacts with sodium hydroxide according to the reaction equation below....
Citric acid (H3C6H5O7) a triprotic acid, reacts with sodium hydroxide according to the reaction equation below. What volume of 0.800 M NaOH in liters, is required to neutralize 3.00L of a 0.400 M solution of citric acid? enter your answer to the hundredths place. H3C6H5O7(s)+3NaOH(aq) --> Na3C6H5O7(aq)+3H2O(l)
Calculate the molar ratio of citric acid and sodium citrate required to prepare 40mM buffer pH...
Calculate the molar ratio of citric acid and sodium citrate required to prepare 40mM buffer pH 4.8 citric acid pka= 3.13, 4.76, 6.39
Citric acid, H3C6H5O7, is a triprotic acid. Consider a buffer system comprising H2C6H5O7- and HC6H5O72- ions....
Citric acid, H3C6H5O7, is a triprotic acid. Consider a buffer system comprising H2C6H5O7- and HC6H5O72- ions. What is the net ionic equation for the reaction that occurs when NaOH is added to a buffer containing H2C6H5O7- and HC6H5O72- ?
29. A student has 200 mL of a buffer solution that consists of 0.700 M of citric acid and 0.500 M sodium citrate. W...
29. A student has 200 mL of a buffer solution that consists of 0.700 M of citric acid and 0.500 M sodium citrate. What is the pH of this solution? The pKal of citric acid is 3.06. 30. Give the formula and name of a metal hydroxide base.
Citric Acid has 3 pKas: 3.13, 4.76, and 6.39. How many grams of sodium citrate monobasic...
Citric Acid has 3 pKas: 3.13, 4.76, and 6.39. How many grams of sodium citrate monobasic (HOC(COONa)(CH2COOH)2) and citric acid (HOC(COOH)(CH2COOH)2) are needed to make 300 mL of a 10 mM citrate buffer of exactly pH 2.8? The molecular weight of sodium citrate monobasic (NaH7C6O7) is 214.11 g/mol and that of citric acid (H8C6O7) is 192.12 g/mol.
A buffer contains significant amounts of acetic acid and sodium acetate.
A buffer contains significant amounts of acetic acid and sodium acetate. Write an equation showing how this buffer neutralizes added acid (HNO3 (aq). Write an equation showing how this buffer neutralizes added base (KOH(aq)).
Consider a buffer composed of the weak acid acetic acid (CH3COOH) and the conjugate base sodium...
Consider a buffer composed of the weak acid acetic acid (CH3COOH) and the conjugate base sodium acetate (NaCH3COO). Which pair of concentrations results in the most effective buffer (i.e. has the highest buffer capacity)? A. 0.10 M CH3COOH; 0.10 M NaCH3COO B. 0.90 M CH3COOH; 0.10 M NaCH3COO C. 0.10 M CH3COOH; 0.90 M NaCH3COO D. 0.50 M CH3COOH; 0.50 M NaCH3COO
Which of the following has the greatest buffer capacity, that is, which could absorb the largest...
Which of the following has the greatest buffer capacity, that is, which could absorb the largest molar amounts of acid or base without changing pH significantly? Explain the basis of your choice. a) a mixture of 1.2 moles each of nitric acid and sodium nitrate in 2.0 L of solution. b) one Liter of 1.0 M NH_4Cl to which 2.00 moles of ammonium nitrate have been added. c) one Liter each of 0.80 M NaF and 0.80 M HF mixed...
Which of the following statements is TRUE? A) A buffer is an aqueous composed of two...
Which of the following statements is TRUE? A) A buffer is an aqueous composed of two weak acids. B) A buffer can absorb an unlimited amount of base. C) A buffer resists pH change by neutralizing added acids and bases. D) A buffer does not change pH when strong acid is added. E) None of the above are true. In which of the following solutions would solid would solid PbBr_2 be expected to be the least solution 25 degree C?...
QUESTION 3 Which of the following statements is true regarding a buffer system of HF acid...
QUESTION 3 Which of the following statements is true regarding a buffer system of HF acid and its salt, NaF? The HF neutralizes the added acid. The HF neutralizes the added base. The NaF neutralizes the added H20. The HF is not a necessary component.
29. A student has 200 mL of a buffer solution that consists of 0.700 M of citric acid and 0.500 M sodium citrate. What is the pH of this solution? The pKal of citric acid is 3.06. 30. Give the formula and name of a metal hydroxide base.
Which of the following has the greatest buffer capacity, that is, which could absorb the largest molar amounts of acid or base without changing pH significantly? Explain the basis of your choice. a) a mixture of 1.2 moles each of nitric acid and sodium nitrate in 2.0 L of solution. b) one Liter of 1.0 M NH_4Cl to which 2.00 moles of ammonium nitrate have been added. c) one Liter each of 0.80 M NaF and 0.80 M HF mixed...
Which of the following statements is TRUE? A) A buffer is an aqueous composed of two weak acids. B) A buffer can absorb an unlimited amount of base. C) A buffer resists pH change by neutralizing added acids and bases. D) A buffer does not change pH when strong acid is added. E) None of the above are true. In which of the following solutions would solid would solid PbBr_2 be expected to be the least solution 25 degree C?...
QUESTION 3 Which of the following statements is true regarding a buffer system of HF acid and its salt, NaF? The HF neutralizes the added acid. The HF neutralizes the added base. The NaF neutralizes the added H20. The HF is not a necessary component.
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