How many grams of acid are needed to prepare a 0.1 M 100 mL phosphate buffer solution with a pH of 7.4? (Use sodium salt in the calculations, Na:23 g/mol, O:16 g/mol, P:31g/mol ; H:1g/mol ; pK1: 2.14 ; pK2:7.2 ; pK3: 12.3 ).

Q: Calculate the pH value of a solution consisting of 100 mL of KOH 10^-1 mol/L and 100 mL of CH3COOH…

A:

Q: What is the pH of a buffer solution prepared from 0.411 moles of CH3COOH and 0.457 moles of NaCH3COO…

A:

Q: An organic acid (HA) has a molecular weight of 100g/mol, a Kow = 5.6 and a K, = 2.7 x 10-2. If…

A:

Q: What is the pH of the buffer that results when 12.0 g of NaH2PO4, and 8.00 g of Na2HPO4 are diluted…

A: Given : Mass of NaH2PO4 = 12.0 g And mass of Na2HPO4 = 8.00 g Since mass = moles X molar mass =>…

Q: What is the pH of a solution that results from mixing together equal volumes of a 0.130 M  solution…

A: Given, 0.130 M solution of acetic acid 0.065 M solution of sodium hydroxide pKa of acetic acid =…

Q: What is the pH of a 250.0 mL solution that contains 3.17 g of potassium monohydrogen phosphate and…

A: Given,  The pH of a 250.0 mL solution that contains 3.17 g of potassium monohydrogen phosphate and…

Q: A 50.00-mL sample of a 1.00 M solution of the diprotic acid H2A (Ka1 = 1.0 × 10–6 and Ka2 = 1.0 ×…

A:

Q: What is the pH of a solution that results from mixing together equal volumes of a 0.150 M solution…

A: Answer :

Q: What is the pH of the solution of 35 mL 0.20 M formic acid and 55 mL 0.10 M sodium formate in 110 mL…

A: Molarity of formic acid = 0.20M Volume of formic acid = 35mL Molarity of sodium formate = 0.10M…

Q: What is the pH of a buffer prepared by dissolving 25.0 g of K2HPO4 and 25.0 g of KH2PO4 in 250 mL of…

A:

Q: The pka of HCN = 9.31. Which solution, when added to 10.0 mL of 0.10 M HCN, has a pH of 9.31? O 10.0…

A:

Q: Calculate the pH of the following solutions. (1)Tap water after boiling       (2)  0.0010 M NaOH…

A: Note - Since you have asked a question with multiple sub-parts, we will do the first three sub-parts…

Q: What is the pH of a solution that is prepared by dissolving 7.50 grams of pyruvic acid (formula…

A: Calculation for finding out the molarity of pyruvic acid:

Q: What would be the pH of a/solution made by adding 100.00 mL of 0.100 M NaOH to 100.0 mL of 0.100 M…

A:

Q: What is the pH of a 0.375 L solution made with and 25.00 mL of 5.50 M HBRO (K, = 2.3 x 10 ) 2.775 g…

A:

Q: You have 100. mL of a 0.10 M solution of phosphoric acid (H3PO4). The pKas of this polyprotic acid…

A: The objective of the question is to determine the pH of the solution.It is given that,The…

Q: calculate the pH of the equivalence pount concentraton of N2OH solution = oil mollL Mean tire (NoOH…

A: Aspirin is a weak acid. It is reacting with a strong base NaOH. So, the equivalence point will be…

Q: Table 1. Required components Component Amount Concentration Sodium Citrate 92.118 dihydrate (mw:…

A: For a buffer solution- pH = pKa + log [Base/Acid]   pKa of citric acid= 4.3

Q: Table: Name: Serine      pka: 2.187 (CO2H) / 9.209 (NH3)        Ka: 6.50*10^-3 (CO2H) / 6.18*10^-10…

A: The main aim of this question is to determining the pH and the concentration of each ionized form in…

Q: You have 200 mL of a 200 mM solution of lactic acid (pKa 3.9) at pH 4.5. If you add 180 mg of HCI…

A: we have to calculate the new pH when HCl is added to lactic acid solution

Q: What is the pH of a solution made from adding 10.00 mL of 0.15 M Na₂HASO4 to 25.00 mL of 0.10 M…

A: volme of Na2HAsO4=10.00 mLconcentration of Na2HAsO4=0.15 Mvolume of NaH2AsO4 =25.00 mLconcentration…

Q: 4-(N-Morpholino)butanesulfonic acid (MOBS) is a weak acid used to prepare buffers for biological…

A: Given,The mass of 4-(N-Morpholino)butanesulfonic acid (MOBS) = 5.00 g pKa of MOBS = 7.48 Molar mass…

Q: What volume, in milliliters, of 0.240 M NaOH should be added to a 0.135 L solution of 0.030 M…

A: Here we have to determine the volume of 0.240M NaOH solution required to be added to 0.135L of…

Q: What is the pH of the solution that is prepared by dissolving 0.8 g of lactic acid (90.08 g/mol, Ka…

A: We have given that  What is the pH of the solution that is prepared by dissolving 0.8 g of lactic…

Q: Calculate the volume (ml)of concentrated ammonia and the weight (gm) of ammonium chloride…

A: Calculating the pOH of the buffer by using the Henderson-Hasselbalch equation: pOH=pKb + log…

Q: Determine the pH of the following solutions:   (a) 50.0 mg of naproxen (pKa = 4.2) sodium…

A:

Q: What is the pH of the buffer that results when 12.3 g of NaH2PO4 and 7.79 g of Na2HPO4 are diluted…

A: Given: Mass of NaH2PO4 = 12.3 g Mass of Na2HPO4 = 7.79 g Molar mass of NaH2PO4 = 120.0 g/mol Molar…

Q: The acid HZ has a pKa of 7.03.  If 25.00 mL of a 0.111 M solution of HZ are titrated with 0.100 M…

A: The objective of the question is to determine the pH before the addition of any base.It is given…

Q: How many grams of NaA (61.41 g/mol) would need to be added to 544 mL of 1.75 M HA to produce a…

A: Molarity of HA, [HA]=1.75 M  Volume of the solution, V = 544 mL=0.544 L pH of the solution=5.49 Ka…

Q: How many grams of citric acid and sodium citrate dihydrate must be added to 1L of water to produce a…

A: The explanation is given below-

Q: Calculate the pH of a 0.50 L solution when 1.00 ml of 1.5 M formic acid and 2.0 ml of 0.4 M formate…

A: Formic acid is a weak acid which forms a buffer solution with its conjugate base, formate ion. The…

Q: Suppose a biochemist has 10 mL of a 1.0 M solution of a compound with two ionizable groups at a pH…

A: PH is a measure of how acidic or basic the solution is and it stands for potential of hydrogen and…

Q: Calculate how many milliliters of 0.140 M HNO3 should be added to 200 mL containing 2.00 g K2CO3…

A: Here we have to determine the volume in ml of HNO3 solution of 0.140M to be added to 200ml of  so2 g…

Q: What is the pH of a solution made from adding 10.00 mL of 0.15 M Na₂HASO4 to 25.00 mL of 0.10 M…

A:

Q: What is the pH of a solution made by adding 0.65 mol of acetic acid (H3CO2H) and 0.30 mol of sodium…

A: Given : solution with weak acid i.e acetic acid moles = 0.65 mol And conjugate base salt of weak…

Q: 6. How many grams of NazHPO, *2 H20 (177.99 g/mol) should be added to 500 mL of 0.5 M H3PO4 to give…

A: H3PO4 and Na2HPO4 will make buffer solution of the combination of weak acid and weak base.

Q: What is the pH of an aqueous solution containing 75.0 mL of a 0.15 M HNO2 solution and 45.0 mL of a…

A: The pH of buffer solution is determine by Henderson equation.   pH = pKa + log [base]  [acid]…

Q: The following question refers to the buffer system: A 1.0-liter solution contains 0.35 M HNO2 and…

A: Buffer solution is that which resists change in pH when small amount of acid or base is added to it.…