a buffer that has a pKa of 7.48 at 25 C. If you are 25 C, and the pH of a solution is 7.75, what is the ratio of deprotonated to protonated species? Answer is 1.9:1 please explain how.

Q: Calculate the pH of a blood plasma sample with a total CO, concentration of 25.7 mM and bicarbonate…

A: Given,The total concentration of CO2 is 25.7 mM.The concentration of bicarbonate is 24.4 mM.The pKa…

Q: What is the effective pH range of buffers formed with the following acids? Hint for b notice you are…

A:

Q: buffer solution is prepared from an unknown weak acid (HA) and its conjugate salt (NaA). If 500.00…

A: We will calculate pKa using henderson hasselbalch equation.

Q: What is the pH of a buffer solution that contains 0.30 M H2PO4–1  and 0.60 M HPO4–2  ? Given: pKa…

A:

Q: The hydronium ion concentration in a buffer solution consists of 0.200 M formic acid and 1.00 sodium…

A:

Q: pka of 4.9 what is the weak acid and conjugate base pH of buffer solution is 5.90

A: The pKa value of 4.9 indicates the acidity of a weak acid. To determine the weak acid and its…

Q: given 250. ml. of a 0.80 M diethylamine (C2H5)2NH2Br solution. Diethylamine-3 is a weak base with K,…

A: Given, Volume of Base  = 250. ml = 0.250 L Concentration of Base = 0.80 M   Mole of Base =0.80 ×…

Q: Based upon the observations of the FeCl3 summarized in the following table, answer the following…

A: Given: Different types of sample tested and data.  To find : which sample gives positive results…

Q: You are studying an unusual enzyme that produces hydronium ions (H3O+) during the course of the…

A: This question is from ionic equilibrium. We will figure out it answer with proper explanation.

Q: Given the following table of K, values, what would be the best conjugate acid to choose to make a…

A: The solution is given below -

Q: A buffer solution of volume 1.0 L contains 0.200 M of a weak acid (pKa 4.37) and 0.100 M sodium salt…

A: Number of moles of weak acid HA = 0.200 M × 1.0 L = 0.200 molNumber of moles of A– = 0.100 M × 1.0 L…

Q: A buffer was made using 0.10 moles of A- and 0.01 moles of HA. If the pKa is 5.71, what is the pH of…

A: A buffer was made using 0.10 moles of A- and 0.01 moles of HA. If the pKa is 5.71, what is the pH of…

Q: What is the pH of a solution containing 0.16 mol L-1 of HCI and 0.828 mol L-1 of a weak acid with…

A: Answer: In the presence of strong electrolyte having a common ion dissociation of weak electrolyte…

Q: What will be the pH of a buffer solution containing an acid with a pKa of 2.2 with an acid…

A:

Q: Activity 5 More on Solubility, and LeChatelier's Principle (5a) What is the molar solubility of CaF2…

A: Answer: According to Le-chatalier's principle, when we change parameter of the system which is in…

Q: Phosphate buffers are commonly used to mimic biological systems. Given that phosphoric acid is a…

A: Step 1:Phosphate buffers are indeed commonly used in biological research and experimentation due to…

Q: The pK value for HF is 3.14. Would a buffer prepared from HF and KF with a pH of 4.94 be considered…

A: A buffer is a solution which resists any change in pH on adding a small amount of acid or base.  It…

Q: Which of the following species would make up a 1.0 M buffer solution with a pH of 2.5? H2SO3 Ka1 =…

A:

Q: Which buffer system is the best choice to create a buffer with pH pH = 7.20? (A) HC,H¸O, /KC,H̟O,…

A: Buffer solution is a solution that has the ability to resist the change in pH when a small amount of…

Q: A buffer solution of HCN/NaCN has a pH = 10. Knowing that this solution contains a concentration of…

A: First we would Calculate Concentration of NaCN using Henderson Hasselbalch equation and given pH,…

Q: An organic acid has been added to a solution with an alkalinity of 50 mg/L of CaCo3. The alkalinity…

A: A numerical problem based on equilibrium concept, which is to be accomplished.

Q: The pK, value for HNO, is 3.35. Would a buffer prepared from HNO, and KNO, with a pH of 5.15 be…

A:

Q: A Phosphate Buffer NaH2PO4 - K2HPO4  with a final volume of 500. mL, concentration of 0.10M with a…

A: A buffer is a solution which resist any change in pH on adding a small amount of acid or base .   it…

Q: 6) The Ksp of Cd(OH)2 is 1.2 x 10-14. What is the pH of a saturated solution of Cd(OH)2? 9.5 9.7 9.2…

A: The Ksp of Cd(OH)2 = 1.2 × 10-14  Ksp of a substance shows how much a solid dissociates into ions in…

Q: A buffer is prepared as a solution of 4.7 M HA and 8.3 M NaA. The pH of the solution is 3.81. What…

A:

Q: Calculate the pH of a buffer solution composed of 0.15M HF and 0.15M NaF. Ka for HF is 6.8 x 10-4.…

A: The objective of the question is to calculate the pH of a buffer solution composed of 0.15M HF and…

Q: A solution of phosphoric acid (H3PO4) with a known concentration of 0.250 M H3PO4 is titrated with a…

A: At third equivalence point, all the  H3PO4 molecule get converted to PO4-3 i.e complete…

Q: The pK₂ value for HF is 3.14. Would a buffer prepared from HF and KF with a pH of 2.64 be considered…

A: Henderson-Hasselbalch equation is used for pH of a buffer solution. pH = pKa + log[conjugate…

Q: What is the pH of a 1.0 L solution that is 0.50 M PO43- and 0.50 M HPO42-? (The pKa values for…

A: As per the Henderson–Hasselbalch equation:pH = pKa + log [PO4-3]/[HPO4-2]pKa = 12.4 as ( third…

Q: Which of the following would be the best choice to prepare a buffer with pH = 3.00 ? A. C5H5N:…

A: Acidic buffer solution - a buffer solution that made of weak acid and its conjugate base ( strong…

Q: A buffer was prepared at pH = 5.41. This buffer contained 0.141 HA. The pKa for HA is 5.22. What is…

A:

Q: The pKa's of H3PO4 are 2.0, 7.0, and 12.5. Assuming you have the sodium salts of all of the ionic…

A:

Q: If [HSO4 ] = .7 M, what [SO42-] is needed to make a buffer of pH 2.2? 0.443 M 0.31 M O.217 M O 2.92…

A: According to your option, the exact answer is not matched. If we choose the option then the close…

Q: I have 3 moles of a monoprotonated base (there are four pKa values(pKa1=2.3, pKa2=4.6,pKa3=10.1,…

A: The chemical reaction for the monoprotonated base can be given as follows: HCl+B-→HB+Cl-;…

Q: Given the values of Ka and Kh below, which of the systems given would be most suitable to use to…

A: The pH of a buffer solution remain close to the pKa value of its acid in weak acid / base and its…