What is the percent of the protonated species in HA/A- buffer at pH 10? pKa of HA = 9.20

Q: Calculate the pH at 25°C of 290.0 mL of a buffer solution that is 0.310 M  NH4Cl and 0.310 M  NH3…

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Q: What is the hydronium ion concentration in a buffer solution prepared by mixing 50.00 mL of 0.10 M…

A: The solution is as follows :

Q: What ratio of CH3NH2 to CH3NH3t is needed to prepare a pH 9.80 buffer? (Kb for CH3NH₂ is 4.4 × 10-4)

A: pH= 9.80  Kb= 4.4×10-4  Pkb= -logKb = -log(4.4×10-4)= 3.356  pH+pOH= 14  POH= 14-PH  POH= 14-9.80 =…

Q: Calculate the pH at 25°C of 183.0 mL of a buffer solution that is 0.230 M  NH4Cl and 0.230 M  NH3…

A: The Henderson Hasselbalch equation for basic buffer is given as :

Q: The pH of a buffer can be calculated using the formula: 14-pOH = pKb + log of [proton…

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Q: Phosphoric acid is a triprotic acid with the p?apKa values p?a1=2.148,  p?a2=7.198, and…

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Q: Which acid would be best to use when preparing a buffer with a pH of 4.72? A list of Ka values can…

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Q: What ratio of NaCN to HCN is needed to prepare a pH 9.90 buffer? (Ka of HCN is 4.9 × 10-10)

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Q: What is the pH of a buffer solution that is 0.34 M methylamine and 0.44 M methylammonium chloride?…

A: Given:   The concentration of methylamine is 0.34 M. The concentration of methylammonium chloride is…

Q: What is the pH of a 80.0 mL solution of 1.25 M concentration acid HA after 40.0 mL of 2.00 M…

A: Equation for the reaction of the monoprotic acid, HA and NaOH is: HA(aq) + NaOH(aq)   ---->…

Q: You have a buffer composed of HCO3- and CO32-. Which ion represents the weak acid? and Which ion…

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Q: In a titration of 80.0 mL of a 0.500 M solution of the diprotic acid H₂C3H₂O4 (malonic acid) with…

A: The balanced equation for the titration is H2C3H2O4(aq) + 2NaOH →Na2C3H2O4 (aq)+2 H2O(l)

Q: You have 100 mL of a 40 mM HEPES buffer at pH 7.4. The pKa for HEPES is 7.5. What are the…

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Q: Determine the pH of a buffer that is 0.55 M HNO₂ and 0.75 M KNO₂. The value of Ka for HNO₂ is 6.8 ×…

A: Acid & its salt forms acidic buffer.

Q: What is the pH of a buffer solution that is 0.20 M propionic acid, HC3H5O2 and 0.16 M sodium…

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Q: What ratio of CH₂NH₂ to CH₂NH₂* is needed to prepare a pH 10.10 buffer? (Kb for CH₂NH₂ is 4.4 × 104)…

A: Given :-  pH of buffer = 10.10 Kb for CH₃NH₂ = 4.4 × 10⁻⁴  To calculate :-  ratio of CH₃NH₂ to…

Q: What is the pH of a buffer prepared by adding 0.607 molof the weak acid HA to 0.609 molmol of NaA in…

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Q: Determine the pH of an equimolar buffer of ammonia and its conjugate base ion. (NH3; Kb = 1.8 x…

A: Solutions which are resisits it pH by addition of strong acid or base are called buffer solutions…

Q: Pyrazolium Chloride is a weak acid (C3H4N2HCl; Ka=1.4x10-3). How many grams of Pyrazole (conjugate…

A: Given: Ka of C3H4N2HCl = 1.4 X 10-3  Concentration of C3H4N2HCl = 0.3 M And pH of buffer solution =…

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

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Q: In a titration of 77.0 mL of a 0.500 M solution of the diprotic acid H₂C₃H₂O₄ (malonic acid) with…

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Q: A certain indicator, HA, has a K, value of 1.0 × 10-5. The protonated form of the indicator is red…

A: pKa = -log Ka pH = -log[H+]

Q: Formic acid, HFor, has a Ka value of 1.8 x 10^-4. You need to prepare a buffer having a pH of 3.25…

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Q: ||| Calculating the pH of a buffer A solution is prepared at 25 °c that is initially 0.28M in…

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Q: 5. If the pKa of HCOOH is 3.74 and the pH of an HCOOH/NaHCOO solution is 3.11, which of the…

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Q: 100.0 ml of a 0.3 M solution of an unknown monoprotic weak acid has a Ka=1x10-6.  What mass of NaOH…

A: Volume of weak monoprotic weak acid = 100ml Molarity of weak monoprotic weak acid = 0.3M Ka = 1 x…

Q: What is the change in ph when 1.0ml of 1m hcl is added to  1) 1.000L of pure water and to  2)…

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Q: If the actual mass of a base used (sodium citrate dihydrate) in a buffer solution is 1.5 g, and the…

A: Given,  Actual mass of base (sodium citrate dihydrate) = 1.5 g  Concentration of the acid (ammonium…

Q: In a titration of 35.0 mL of a 0.500 M solution of the diprotic acid H₂C₃H₂O₄ (malonic acid) with…

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.