Calculate the pH of a buffered solution that is prepared by dissolving 0.3mol of NaHCO3and 0.45mol of Na2CO3 in 1L of water at 298 K? (NaHCO3 pKa=10.27)

Q: What is the pH of a buffered system made by dissolving 17.42 g of KH2PO4 (MM 136.1 g/mol) and 20.41…

A: Given : Mass of KH2PO4 = 17.42 g Mass of K2HPO4 = 20.41 g And Ka of KH2PO4 = 6.2 X 10-8  Molar mass…

Q: Given aqueous solutions of 0.1 M weak acetic acid (CH3COOH, pKa=4.72) and 0.1 M sodium acetate…

A: Consider the volume of acetic acid in the final solution be x L and the volume of sodium acetate in…

Q: Blood is buffered by carbonic acid and the bicarbonate ion. Normal blood plasma is 0.024 M in HCO3-…

A: The given pKa1 is 6.1 Concentration of HCO3-is 0.024 M Concentration of H2CO3 is 0.0012 M a. pH of…

Q: Sodium acetate, NaCH;COO (82.0343 g/mol) is commonly used as acidic buffer solution. Estimate the…

A:

Q: A weak base has Kb=3.2×10−6. The compound has a solubility of 1.667gL, and the molar mass is…

A: Equation for Base:

Q: The pK, value for HF is 3.14. Would a buffer prepared from HF and NaF with a pH of 1.14 be…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: a. Use the Ka values provided to chose a weak acid that can effectively buffer a solution at a pH of…

A: Given data,

Q: 20. mL of 0.25 M of HC2H3O2 is titrated with 0.40 M KOH, Calculate the pH of the solution after 15…

A:

Q: An analytical chemist Is titrating 150.5 mL of a 0.1400M solution of aniline (CH,NH,) with a 0.4000M…

A:

Q: 4. Tris(hydroxymethyl)aminomethane [(HOCH2);CNH2–Tris, or THAM] is a weak base frequently used to…

A: 4. Solution - pH = pH is a scale used to specify the acidity or basicity of an aqueous solution.…

Q: A buffer solution is 0.444 M in CH3COOH and 0.346 M inCH3COONa . If Ka for CH3COOH is 1.8×10-5 ,…

A: pH of buffer solution is calculated using formula  pH = pKa + [CH3COONa] / [CH3COOH]

Q: A. What is the pH of a buffer prepared by adding 0.607 molof the weak acid HA to 0.406 mol of NaA in…

A:

Q: Calculate the pH of a mixture containing 50 mL of 0.1 M NaH2PO4 and 150 mL of 0.1 M Na2HPO4. How…

A: NaH2PO4 and Na2HPO4 makes an acidic buffer solution, whose pH is given by the expression:…

Q: A buffer is to be prepared from acetic acid (CH3COOH) and sodium acetate (NACH3COO). What ratio of…

A: Correct answer is 100 : 1. pka = -log ka = -log ( 1.82 x 10-5 ) = 5 - 0.26 = 4.74 Henderson equation…

Q: Sketch the potential energy diagram for exothermic and endothermic reactions indicating the Ea and…

A:

Q: Which of following mixture will be the BEST buffer at pH ~9? Mixing 10mL of 1M NH3 and 5mL of 1M KOH…

A:

Q: A buffer solution is 0.438 M in HNO2 and 0.236 M in KNO2. If Ka for HNO2 is 4.5x10-4, what is the pH…

A: Given: concentration of HNO2 = 0.438 M  concentration of KNO2 = 0.236 M  Ka for HNO2 = 4.5 × 10-4…

Q: chemist needs to prepare a buffer solution with ph = 10.00 and has both Na2CO3 and NaHCO3 in pure…

A:

Q: How many moles of solid NaF would have to be added to 1.0 L of 1.85 M HF solution to achieve a…

A:

Q: 1.00 L of an aqueous solution containing 0.1026M of compound B and 0.0296M of its conjugate acid HB*…

A: For buffer solution change in pH can be predicted by Henderson–Hasselbalch equation. pH = pKa +…

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 buffer solution is 0.387 M in HNO2 and 0.314 M in NaNO2 . If Ka for HNO2 is 4.5×10-4 , what is the…

A: Buffer is a solution which resists the change in pH of a solution by the addition of acid or base.…

Q: Calculate the pH of a 0.97 M solution of a weak acid, AH, for instance CH3COOH, and 0.12 M of a…

A:

Q: What will be the pH of a solution when 200ml of 0.1M HEPES in the basic form and 100mL of 0.1 M…

A: Given: Concentration of Base = 0.1 M volume = 200 mL = 0.2 L concentration of acid = 0.1 M volume =…

Q: A 1 litre solution is made by adding 0.6646 moles NaH2PO4 and 0.8868 moles Na2HPO4. What will be the…

A: Here by mixing NaH2PO4 and Na2HPO4 we are making Buffer solution Basically buffer solution is a type…

Q: ou have been asked to prepare 250.0 mL of a buffer solution with a pH of 8.88 at room temperature.…

A: Given: Volume of buffer = 250.0 mL = 0.250 L                               (Since 1 L = 1000 mL) pH…

Q: a. What quantity (moles) of NaOH must be added to 1.0 L of 1.7 M HC, H3O2 to produce a solution…

A: Here we have to determine the moles of NaOH should be added to 1Liter of 1.7 M CH3COOH to make the…

Q: How much (in grams) Na2HPO4 must be added to 100 mL 1.0 M NaH2PO4 solution to prepare a buffer…

A:

Q: Calculate the pH of a buffer prepared by adding 10mL of 0.10 M acetic acid to 20mL of 0.10 M sodium…

A: When a weak acid and its conjugate base (vice versa) are mixed together in the aqueous medium, the…

Q: An aqueous solution contains 0.345 M dimethylamine ((CH3)2NH). How many mL of 0.370 M hydroiodic…

A:

Q: A buffer solution is 0.307 M in HNO2 and 0.325 M in NaNO2 . If Ka for HNO2 is 4.5×10-4 , what is the…

A: Ka = 4.5× 10-4  pKa = -log Ka = - log(4.5×10-4)  pKa = -(-3.346) = 3.346  HNO2 is weak acid and…

Q: Calculate the pH of a buffer solution that is 0.5 M CH3COOH and 0.8 M NaCH3COO. (pKa for acetic acid…

A:

Q: A buffer is prepared by adding 10.0 g of ammonium chloride(NH4Cl) to 250 mL of 1.00 M NH3 solution.…

A:

Q: A chemist needs to prepare a buffer solution with pH = 10.00 and has both Na2CO3 and NaHCO3 in pure…

A: Given pH of buffer solution = 10.00 Volume of buffer solution = 1.00 L Total mass of salts = 10.0 g…

Q: aching and le + ment/kCovalentAchivity.do?koatorassiqnmeent-take [Review Topics) [References) Use…

A:

Q: 4) Calculate how much 1.00 M CH3COONA solution, in mL, you would need to add to 10.00 mL of a 1.00 M…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Calculate the pH of a buffer that is 0.225 M HC2H302 and 0.314 M NaC2H3O2. The Ka for HC2H302 is 1.8…

A:

Q: what is the (HSO4)-, (SO4)2- and ph of a buffer solution which is composed of 50mL of 0.25M NaHSO4…

A: We have to calculate the pH of the buffer solution

Q: What is the pH of a buffer made by mixing 0.155M HC2H3O2 with 0.225M NaC2H3O2 to a total volume of…

A: Given: Concentration of weak acid HC2H3O2 = 0.155 M Concentration of NaC2H3O2 = 0.225 M And volume…

Q: pka of Hypobromous acid is 8.60 What must be the minimum concentration of hypobromous acid in 1.00L…

A:

Q: A buffer solution is 0.416 M in H2 S and 0.245 M in NaHS. If K for H2S is 1.0 x 10-7, what is the pH…

A: This question is checking our basic concept regarding "Handerson - Hasselbalch equation".  We have…

Q: What is the pH of a buffer prepared by mixing 100 mL 0.050 mM NaH2PO4 and 25 mL 0.075 mM Na2HPO4?…

A:

Q: A)What is the pH of a buffer prepared by adding 0.506 molmol of the weak acid HAHA to 0.507 molmol…

A:

Q: What is the pH of a buffer prepared by mixing 100 mL 0.050 mM NaH2PO4 and 25 mL 0.075 mM Na2HPO4?…

A: Given,  Millimolarity of NaH2PO4 = 0.050 mM  Volume of NaH2PO4 in mL = 100 mL  Millimolarity of…

Q: A buffer solution is 0.485 M in HNO2 and 0.372 M in KNO2. If Ka for HNO2 is 4.5×10-4, what is the pH…

A: This problem is based on acidic buffer.    Acidic buffer are those which contain weak acid and salt…

Q: What is the pH of a buffer solution made by mixing 50.0 ml of 0.100M potassium hydrogen phthalate…

A:

Q: Which solution below would have the greatest buffering capacity? The solution was prepared from a…

A: Given, buffer solutions are: 0.197 M HOC2H4NH2 and 0.197 M HOC2H4NH3Cl, Kb = 3.20e-5 0.0966 M NH2OH…

Q: Arsenic acid is a triprotic acid with the pKa values pK₁1 = 2.240, pKa2 = 6.960, and pK₁3 = 11.500.…

A: Here we have to determine the mass of NaH2AsO4 and NaH2AsO4 required to prepare 1L of buffer…

Q: How many moles of HCOONa must be added to 1.0L of 0.10M HCOOH to prepare a buffer solution with a pH…

A: