What will be the pH of a solution when 200ml of 0.1M HEPES in the basic form and 100mL of 0.1 M HEPES in the acid form are mixed together? The pKa of HEPES is 7.55

Q: Consider the titration of 50.0 mL of 0.0462 M HNO3 with 0.100 M KOH. What is the pH of the solution…

A: pOH = -log[OH-]pH = 14 - pOH

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: calculate the pH of a solution that is made when 0.10 L of 0.24 M benzoic acid (pKa=4.19) and 0.10 L…

A: The pH can be calculated as,

Q: The pH of a buffer solution containing 0.35 M acetic acid and 0.39 M sodium acetate where the pKa of…

A: For acidic buffer solution: pH = pKa + log CH3COO-CH3COOH  pH = 4.75 + log 0.390.35  pH = 4.75 +…

Q: What is the pH of a solution that results from mixing together equal volumes of a 0.020 M  solution…

A: Initial moles of NH3 = V x 0.0200 = 0.0200V molMoles of HCl added = V x 0.010 = 0.010V mol NH3 + HCl…

Q: You want to make a 500.0 mL of 0.080 M of phosphate buffer pH = 7.90 from Na2HPO4 and NaH2PO4…

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Q: 2. At 25°C, a 1-L buffer solution is prepared by mixing acetic acid and sodium acetate. A) If the…

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Q: In the above buffer preparation, if NaOAs (Sodium acetate) is replaced by 4 M NaOH solution, what is…

A: Volume of buffer solution = 100 mL pH of buffer solution = 4.0 pKa of acetic acid = 4.77 According…

Q: The Ką of acid HA is 3.5 x 10 and the Kp of base B is 7.2 x 104. When 0.50-mol HA and 0.50-mol B are…

A: Answer: greater than 7

Q: 1. A buffer solution is prepared by taking 0.25 moles of acetic acid (pKa = 4.76) and 0.400 moles of…

A: 1. Given,

Q: Which

A: Those solution when resist to change the pH when small amount of acid or base added on it's then…

Q: What is the pH of a buffer solution that is 0.40 M in formic acid (HCHO2) and 0.90 M in sodium…

A: Given: pKa of formic acid = 3.74 Concentration of formic acid = 0.40 M Concentration of sodium…

Q: An analytical chemist is titrating 190.8 mL of a 0.4600M solution of nitrous acid (HNO,) with a…

A: The titration reaction between Nitrous acid and KOH can be represented as- HNO2 + KOH ----> KNO2…

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: At 22 °C, an excess amount of a generic metal hydroxide, M(OH),, is mixed with pure water. The…

A:

Q: An analytical chemist is titrating 163.3 mL of a 0.5200 M solution of piperidine (C;H1,NH) with a…

A: Given: Volume of piperidine = 163.3 mL Concentration of piperidine = 0.5200 M Volume of HNO3 = 558.3…

Q: If equal volumes of 0.29 M acetic acid and 0.12 M sodium hydroxide are mixed, what is the pH of the…

A: Henderson–Hasselbalch equation, pH = pKa + log [salt]/[acid]

Q: What is the pH of a buffer solution that is 0.159 M in hypochlorous acid (HCIO) and 0.121 M in…

A: Given: Concentration of hypochlorous acid (HCIO)=0.159 M Concentration of  sodium hypochlorite…

Q: An analytical chemist is titrating 160.2 mL of a 0.3300M solution of nitrous acid (HNO,) with a…

A: Given: The reaction is as follows: HNO2(g) + KOH(l)   ⇌  KNO2(aq) + H2O.  The volume of HNO2, (V1) =…

Q: A buffer solution is composed of 5.00 mol of acid and 1.75 mol of the conjugate base. If the pKa of…

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: What is the pH of a solution that results from mixing together equal volumes of a 0.070 M  solution…

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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: At 22 °C, an excess amount of a generic metal hydroxide, M(OH),, is mixed with pure water. The…

A: Given ph is more than 7  Convert in poH term.

Q: Calculate the pH of a buffer formed by mixing 85.0 mL of 0.130 M lactic acid, HC3H5O3, with 95.0 mL…

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Q: The organic compound trishydroxymethylaminomethane is abbreviated Tris and is basic. The conjugate…

A:

Q: An analytical chemist is titrating 222.7 mL of 0.8100 M solution of formic acid (H2 CO2 ) with a…

A: The volume of KOH solution required to neutralize the given volume of formic acid is calculated…

Q: In a laboratory experiment, the pH of a solution must be maintained at around 7.5. Which of the…

A: Given table is : Buffer solution pKa 1). H3PO4/H2PO4-  2.18 2). HC2H3O2/C2H3O2- 4.76 3).…

Q: 10. What is the pH of a buffer solution that contains 0.245 M weak acid and 0.450 M of the conjugate…

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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: Calculate the pH of a buffer prepared by mixing 0.38 M C5H5N with 0.87M C5H5NH+ given that the Kb…

A: Buffer is the solution of mixture of weak acid/weak base with its salt of strong base/strong acid

Q: How many grams of NaF (41.98817 g/mol) would have to be added to 2.00 L of 0.100 M HF (20.01 g/mol)…

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: Calculate the volume at which the pH= pKa if 30.00mL of weak acid with a concentration of 0.09885M…

A: Concentration of weak acid (M1) = 0.09885 M Volume of weak acid (V1) = 30.00 mL Concentration of…

Q: What is the pKa of an acid if a buffer made from 0.045 mol of the acid and 0.060 mol of its…

A: The pH is used to determine the acidity or basicity of a solution. The pH of a solution is the…

Q: A buffer solution is composed of 1.324 g of KH2PO4 and 4.362 g of NazHPO4. (K, for dihydrogen…

A: Given the mass of KH2PO4 = 1.324 g Molar mass of KH2PO4 = 136.086 g/mol  Moles of KH2PO4  = 1.324 g…

Q: What is the pH of the solution?

A:

Q: Consider a buffer solution that is 0.50 M in NH3 and 0.20 M in NH4Cl. For ammonia, pKb=4.75.…

A: Given: [NH3]=0.50 M[NH4Cl]=0.20 MpKb=4.75Volume of solution=1.0 L To calculate: pH

Q: Calculate the pH of a buffer that is 0.225 M HC2H302 and 0.162 M KC2H3O2. The Ka for HC2H3O2 is 1.8…

A:

Q: An analytical chemist is titrating 64.6 mL of a 0.8000 M solution of nitrous acid (HNO₂) with a…

A: Given data :  Concentration of HNO2 = 0.8000 M Volume of HNO2 = 64.6 mL CConcentration of KOH =…

Q: A buffer solution is prepared by taking 0.250 moles of acetic acid (pKa = 4.76) and 0.400 moles of…

A:

Q: A 50.00-mL sample of 0.250 M HC2H3O2 was titrated with 0.125 M NaOH. What is the pH of the resulting…

A: we have to calculate the pH of solution

Q: 7. A solution was made by mixing 50.0 mL of 0.750 M HCN with 25.0 mL of water. What is the pH of…

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

A:

Q: calculated after 12.5 mL of titrant is added? Group of answer choices The pH is based on the…

A: reaction after adding HCl, F- + H+ ---> HF  Mmol of F- = M × V . = 25 ×0.1 = 2.5 mmol Mmol of…

Q: If 26.6 mL of 0.108 M acid with a pKa  4.65 is titrated with 0.101 M NaOH solution, what is the pH…

A:

Q: 2.50 g of sodium acetate, CH3COONa was dissolved in 150.0 mL of water, H2O. A solution of 0.025 M…

A: Given Data: Mass of sodium acetate = 2.50 g Volume of sodium acetate = 150.0 mL…