Q: The pKa of HEPES is 7.55 at 20 degrees Celsius, and its molecular weight is 238.1. Calculate the…
A: Given: The pKa of HEPES = 7.55 The molecular weight of HEPES = 238.1 We have to calculate the mass…
Q: On the basis of Le Chatelier's principle, explain why Ag2CO3 dissolves when HNO3 is added.
A: Le Chatelier’s principle states that if a given chemical system is present in equilibrium and a…
Q: Consider a titration of 40.00 mL of 0.1250 M Na2CO3 with 0.4000 M HCl. Carbonic acid (H2CO3) has a…
A: The number of milliequivalents of sodium carbonate Na2CO3 = 40.00 x 0.1250 = 5 mmol The number of…
Q: Many chemical reactions are carried out in the presence of buffers. Use the Henderson-Hasselbalch…
A: Buffer solution : it is a solution which resists in change in pH of solution when a small amount of…
Q: The determination of amine nitrogen by formular titration is based on Choose one answer: a.…
A:
Q: 25) If the concentration of Pb²+ is found to be 1.3 · 10-9 mol/L In a saturated solution of…
A:
Q: 500ml of a 0.1M sodium phosphate buffer with pka of 7.21is diluted. Calculate the pH of of the…
A:
Q: What concentration of base is needed in a phosphoric acid buffer where the concentration of…
A: Since you have posted multiple questions, we are entitled to answer only the first.
Q: A. What two compounds would be best to use in preparing a pH 9.0 buffer solution? justify your…
A: (A) Buffers are effective when the pKa values are closest to pH. Thus, the two compounds best for…
Q: A stock solution contains 0.058 mM glucose. To 218 uL of this stock solution was added: 607 uL…
A: The number of moles of reaction always remains constant. Variables such as volume and concentration…
Q: An analytical chemist is titrating 220.7 mL of a 0.3400M solution of trimethylamine ((CH,) N) with a…
A: Concept: pH of acidic solution: The pH of an acidic solution can be calculated by using the…
Q: A 100.0 mL solution containing 0.877 g of maleic acid (MW = 116.072 g/mol) is titrated with 0.256 M…
A: The explanation is given below-
Q: An analytical chemist is titrating 187.6 mL of a 0.4000M solution of trimethylamine ((CH3),N) with a…
A: Given volume of (CH3)3N = 187.6 mL Molarity of (CH3)3N = 0.4000 M Molarity of HNO3 = 0.7000 M…
Q: You wish to prepare an HC2 H3 O2 buffer with a pH of 4.14. If the pKa of HC2H3 O2 is 4.74, what…
A: Given :- pH of buffer solution = 4.14 pKa value for HC2H3O2 = 4.74 To calculate :- Ratio of…
Q: Which of the following is common about the cations of the first analytical group? a) They are…
A: Given statement is : Which of the following is common about the cations of the first analytical…
Q: mass of NaCH3COO must be dissolved in 400 mL of 0.46 M CH3COOH in order to prepare a solution with…
A:
Q: What amount of sodium formate must be added to a 1.00 L solution containing 1.28 moles of formic…
A: Given: Volume of solution = 1.00L moles of formic acid = 1.28 moles pH = 4.10 pKa= 3.74 To find: The…
Q: The Ka of bromoacetic acid is 2.00 ×10–3. What masses of bromoacetic acid (CH2BrCOOH) and sodium…
A:
Q: Tris(hydroxymethyl)aminomethane [(HOCH,)3CNH, Tris or THAM] is a weak base frequently used to…
A: It is an example of a basic buffer solution. Molar mass of THAM is 121 g/mol
Q: Ethylamine (C2H5NH2) has a Kb value of 4.5x10–4. Calculate the pH of a buffer solution that is…
A:
Q: What is the solubility of PbCO3(s) in 0.5M Na2CO3?
A: The solubility of a salt decreases in the solution due to common ion effect. The solubility of a…
Q: Estimate the concentration of Ethanoic acid of a buffer solution containing 16.4 g/L CH3COONa and pH…
A: Since you have posted multiple unrelated questions, we are entitled to answer the first only. 5)…
Q: Iminodiacetic acid (IDA) is often used in ion exchange resins as a way to remove heavy metals from…
A:
Q: A substance X was shown to be a weak acid with a single pKa value of 3.00. Using the, a 1.0-L buffer…
A:
Q: You wish to prepare an HC 2H 3O 2 buffer with a pH of 4.14. If the pK a of is 4.74, what ratio of C…
A: pH = pKa + log[salt]/[acid]
Q: Ethylamine (C2H5NH2) has a Kb value of 4.5x10–4. Calculate the pH of a buffer solution that is…
A: Buffer is the solution of mixture of weak acid/weak base with its salt of strong base/strong acid
Q: A student needs to prepare a buffer solution with a pH of 5.26. Assuming a pKa of 4.73, how many mL…
A: A buffer solution is the one which is formed by mixing “a weak acid with the solution of the salt of…
Q: 1. In Acidic Buffer solution (HNO;J/INO,] when the value of pH - pka +1, the ratio of (HNO,/[NO,] is…
A: You have posted multipart of question as per the guidelines i have solved first three kindly asked…
Q: Iminodiacetic acid (IDA) is often used in ion exchange resins as a way to remove heavy metals from…
A: Solution - ɑA2- = 4.6 × 10-3 Kf =[Ni A22-] /[Ni 2+][ɑ A2-]2 C 2IDAA [Ni A22-] /[Ni 2+] C 2IDAA =…
Q: The pH of a solution containing 0.010 M lactic acid and 0.087 M lactate is 4.80. Calculate the pKa…
A: Given:Concentration of lactic acid = 0.010 M Concentration of lactate = 0.087 M pH of the solution…
Q: You wish to make a buffer of 500 mL at 0.1 M sodium phosphate at pH 6.5. If the molecular weight of…
A: Buffer is a solution that resists the change in its pH when small amount of acid or base is added to…
Q: A 100.0 mL solution containing 0.973 g of maleic acid (MW = 116.072 g/mol) is titrated with 0.364 M…
A:
Q: What is the Ph of the buffer solution that contains 1.00 M HC2H302 (acid) and 0.800 M KC2H302 with…
A: Whenever the acid concentration as well as its conjugate base, or the base and its conjugate acid,…
Q: 4) You wish to prepare an HC2H3O2 buffer with a pH of 5.44. If the pKa of is 4.74, what ratio of…
A:
Q: 7. solution was observed to be 5.45, exactly halfway to its equivalent point. What is the Ka and pKa…
A:
Q: In a 0.1 M solution of a weak acid, 35% of the weak acid is dissociated. The solution has a pH=3.5.…
A: ka is the acid dissociation constant. and pKa is calculated from Ka by using formula, pka= - log (…
Q: Part A You wish to prepare an HC2H3O2 buffer with a pH of 5.14. If the pK of is 4.74, what ratio of…
A:
Q: Tris(hydroxymethyl)aminomethane [(HOCH2)3CNH2—Tris, or THAM] is a weak base frequently used to…
A: Given, pH of buffer =7.4 pKa =8.08 pH of any buffer solution can be calculated by…
Q: How many mL of 0.600 M NaOH should be added to 5.38 g of carbonic acid (H2CO3, FW = 60.02) (pKa1 =…
A:
Q: Consider the HNO2-KNO2 buffer system, which species would react if a dilute aqueous KOH solution…
A: The buffer solution of HNO2-KNO2 formed by combination of weak acid nitrous acid HNO2 and it's salt…
Q: Calculate the pH of a buffer in which [HC4H7O2] = 0.36 M and [C4H7O2 –] = 0.31 M. How do you…
A: The buffer is made from HC4H7O2 and C4H7O2 –. Thus this is a buffer of a weak acid. Let us consider…
Q: The "tris" buffer is one of the most widely used buffers in biological research. This buffer is made…
A:
Q: How many moles of sodium acetate must be added to 500 mL of 0.25 M acetic acid solution to produce a…
A:
Q: What weight of Na2HPO4 and H2PO4 would be required to prepare 200mL of a buffer solution of pH 7.40…
A: Given data, Na2HPO4 and H2PO4 prepared 200mL of a buffer solution of pH 7.40 Ionic strength =…
Q: This problem uses a bicarbonate/carbonate buffer which means that we can consider the following…
A: The Ka for bicarbonate is 4.7 x 10-11 is correct. Since pKa = -log(Ka) Hence substituting the…
You wish to prepare an HC2H3O2 buffer with a pH of 4.24. If the pKa of is 4.74, what ratio of C2H3O2/HC2H3O2 must you use?
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 1 images
- You wish to prepare an HC2H3O2 buffer with a pH of 5.44. If the pKa of is 4.74, what ratio of C2H3O2-/HC2H3O2 must you use?What will be the pH of a buffer solution containing an acid with a pKa of 5.4 with an acid concentration equivalent to that of its conjugate base?What will be the appropriate pH of a buffer prepared by mixing 100 ml of 0.1 M Na2HPO4 and 100 ml of 0.1 M NaH2PO4? (For H3PO4, pKa1 = 2.1; pKa2 = 6.8; pKa3 = 12.5) Ans in 2 significant figures
- Calculate the pH of a buffer in which [HC4H7O2] = 0.36 M and [C4H7O2 –] = 0.31 M. How do you calculate pKa acid dissociation constant??An analytical chemist is titrating 164.9 mL of a 0.3400M Solution of propylamine (C,H,NH,) with a o.3700M Solution of HNO,. The pK, of propylamine is 3.46. Calculate the pH of the base solution after the chemist has added 67.7 mL of thE HNO, solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO, solution added. Round your answer to 2 decimal places. pH = ?The maximum buffering capacity is nearest to the pKa of the buffer. Explain why?
- Calculate the pH of the solution after the addition of each of the given amounts of 0.0651 M HNO3 to a 50.0 mL solution of 0.0750 M aziridine. The pKa of aziridinium is 8.04. What is pH at equivalence?Considering the figure, write an equation in terms of pH and pKa that defines buffer range.[attached photo is the given data] Questions: 1. What is the pKa of the acid? 2. What is the pH of the buffer solution?
- An analytical chemist is titrating 199.8 mL of a 0.1100M solution of trimethylamine ((CH3), N) with a 0.2200 M solution of HNO3. The pK, of trimethylamine is 4.19. Calculate the pH of the base solution after the chemist has added 61.2 mL of the HNO3 solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO, solution added. Round your answer to 2 decimal places. pH = 0 X S 图 dhAn analytical chemist is titrating 131.0 mL of a 0.6600 M solution of propylamine (C,H,NH,) with a 0.2300 M solution of HNO,. The p K, of propylamine is 3.46. Calculate the pH of the base solution after the chemist has added 396.1 mL of the HNO, solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO, solution added. Round your answer to 2 decimal places. pH = Explanation Check Accessibility 2021 McGraw-H Education. V O 10:00similar to the question what is the pKa of formic acid when the pH of buffer is 4.18?