What are the [H3O+] and the pH of a propanoic acid– propanoate buffer that consists of 0.35 M CH3CH2COONa and 0.15 M CH3CH2COOH (Ka of propanoic acid = 1.3 x 10-5)?

Q: Which is the best acid to use in the preparation of a buffer with pH = 9.8? A. HNO3 B. HOI (Ka = 2.0…

A: Given: Ka of HNO3 = 2.1×101 Ka of HOI = 2.0×10-11 Ka of HNO3 = 1.7×10-1 Ka of HNO3 = 4.5×10-4

Q: The pH of a bicarbonate-carbonic acid buffer is 6.62. What is the ratio of carbonic acid to the…

A: Ka value is 4.2x10-7 The  pKa can be calculated as follows: pKa=-log[Ka]=-log[4.2×10-7]=6.37

Q: What is the pH of a buffer that is 0.200 M H2PO4−and 0.250 M HPO42− at 25°C?

A: The buffer solution is the solution that resists changing the pH of the solution if a small amount…

Q: Calculate the pH of an acetate buffer that is a mixture of 0.10M acetic acid (CH3COOH) and 0.10M…

A: Given,  Ka = 1.8×10-5 pKa = 4.74  Mmol of Acetic acid = M × V     = 0.10 ×99 =9.9 mmol mmol of…

Q: Find the pH of a buffer that consists of 1.3 M sodium phenolate (C6H5ONa) and 1.2 M phenol (C6H5OH)…

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Q: 6. A buffer solution contains 0.10M benzoic acid (C6H5COOH, Ka = 6.3 x 105) and 0.10M potassium…

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Q: If an acetic acid (CH3COOH)/sodium acetate (CH3COONa) buffer solution is prepared from 100 mL of…

A: Given : concentration of acetic acid = 0.1 M = concentration of sodium acetate And volume of acetic…

Q: Consider the following reaction: CH3 COOH + OH- -----> CH3COO- + H2O How much 5.90M  NaOH must be…

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Q: What weight of sodium formate (NaHCOO, 68.008 g/mol) must be added to 400.0 mL of 1.00 M formic acid…

A: Given that: [HCOOH] = 1.00M Formic acid and sodium formate makes the acidic buffer.  pH = 3.50  Ka =…

Q: What is the pH of an acetic acid/sodium acetate buffer with [CH3CO2H] = 0.850 M and [CH3CO2-] =…

A: The pH of a solution is defined as the negative logarithm of hydrogen ions present in the solution.…

Q: Calculate the pH of buffer system with 0.25 M C6H5NH3 and 0.31 M C6H5NH3+.Ka of anilinium ion = 2.5…

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Q: What is the solubility of magnesium hydroxide in a solution buffered at pH 9.25?…

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Q: What is the pH of a buffer that is 0.12 M in lactic acid [CH3CH(OH)COOH, or HC3H5O3] and 0.10 M in…

A: Buffer solution consists of mixture of weak acid and its conjugate base.

Q: What is the solubility of magnesium hydroxide in a solution buffered at pH 8.45?…

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Q: What is the pH of a hydrocyanic acid buffer solution containing 0.25 mol/L of HCN and 0.50 mol/L of…

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Q: You have 500.0 mL of a buffer solution containing 0.30 Macetic acid (CH₂COOH) and 0.20 M sodium…

A: Volume of buffer solution = 500 mL = 500 × 10-3  L Molarity of  Acetic acid = 0.30 M Molarity of…

Q: What is the pH of a buffer made of 1.4E-1 M CH3COOH(aq) and 4.6E-1 M NaCH3COO(aq)? Ka for CH3COOH =…

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Q: Calculate the p H of a buffer containing 0.50 mol/L of pyruvic acid CH3COCOOH, and 060 mol sodium…

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Q: What ratio of NaCN to HCN is needed to prepare a pH 10.00 buffer? (Ka of HCN is 4.9 x 10-10)

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Q: Calculate the pH of a buffer that is 0.225M HC2H3O2 and 0.162M KC2H3O2 . The Ka is 1.8 x 10-5.

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Q: You are given a 40.0mL sample of 0.80M CH3CH2COOH is titrated with 0.30M NaOH.  What is the pH of…

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Q: A buffer is made with sodium acetate (CH3COONa) andacetic acid (CH3COOH); the Ka for acetic acid is…

A: Since the pH of an acidic buffer is given by the Henderson-Hasselbalch equation as pH = pKa + log{…

Q: How much solid sodium acetate (CH3COONa) is needed to prepare a buffer solution at ph 5 if you have…

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Q: What is the pH of a buffer solution made by adding 0.15 mole of lactic acid HC3H5O3 and 0.12 mole…

A: A buffer is a solution which resists a change in its pH, i.e., its pH does not change. For example,…

Q: What is the pH of a buffer solution with 0.21 M Pyridine (C5 H5 N) and 0.35 M pyridine chloride ( C5…

A: • Given that the concentration of pyridine base is 0.21 M in buffer solution. • And the…

Q: What is the ratio of HPO42- and H2PO4- needed to prepare a buffer with a pH of 7.00? (H2PO4-; Ka =…

A: The pH of buffer and ratio of conjugate base to acid are related through Henderson-Hasselbalch…

Q: The pH of a bicarbonate-carbonic acid buffer is 6.18. Calculate the ratio of the concentration of…

A: The ratio of [H2CO3] to that of [HCO3-] is determined by using Henderson-Hasselbalch equation.

Q: 1. Calculate the ratio of [CH:COOHJ/NaCH:COO] to give a buffer solution at pH 5. (Ka of acetic acid…

A: We want to solved just first one question- 1  1- First we calculate the pKa value :  pKa = -log(Ka)…

Q: An acetic acid buffer contains 0.6 M CH3COOH and 0.6 M CH3COONA. (CH3COOH has a K, 1.76 x 105.) What…

A: Given- Concentration of CH3COOH= 0.6M Concentration of CH3COONa= 0.6M Ka of CH3COOH=1.76 ×10 -5…

Q: i. A 1.000L buffer is made of 0.7 M CH3COOH and 0.6 M CH3COONa .What is the pH of the buffer…

A: (i) We have  volume of solution =1 L Molarity of CH3COOH=0.7 M⇒moles =0.7 mol/L ×1L=0.7 molMolarity…

Q: What is the pH of a buffer solution made by adding 0.15 mole of lactic acid HC3H5O3 and 0.12 mole…

A: Value of pH of a solution is used to tell whether the solution is acidic or basic in nature. At room…

Q: A formic acid buffer solution contains 0.20 M  HCOOHHCOOH  and 0.25 M  HCOO− . The pKa of formic…

A: Since HCOOH is a weak monoprotic acid. And the pH of monoprotic acid buffer is given by…

Q: What are the [H₃O⁺] and the pH of a propanoic acid–propanoate buffer that consists of 0.35 M…

A: First of all write the  equation for given compound: CH3CH2COONa→CH3CH2COO-+Na+ CH3CH2OOH=0.15…

Q: hat is the pH of a hydrocyanic acid buffer solution containing 0.25 l/L of HCN and 0.50 mol/L of CN?…

A: Acidic buffer solution formed from weak acid and it's salt of strong base.

Q: What is the pH of a buffer that is 0.15 M in lactic acid [CH3CH(OH)COOH, or HC3H5O3] and 0.10 M in…

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Q: What volume of 2.00 M NaOH must be added to 300.00 mL of 1.00 M glycolic acid to produce a buffer…

A: Interpretation-  To determine the volume of 2.00 M NaOH must be added to 300.00 mL of 1.00 M…

Q: NAOH + CH;CH2COOHCH3CH;COONA + H2O A buffer solution is formed when sodium hydroxide is added to an…

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Q: [A | [HA] 5. What ratio HA will create an acetic acid buffer of pH 5.0? Ka acetic acid is 1.75 x…

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Q: What is the pH of a buffer that is 0.12 M in lactic acid [CH3CH(OH)COOH, or HC3H5O3] and 0.10 M in…

A: The acid ionization constant for lactic acid is 1.4×10 -4.

Q: What is the pH of a buffer solution made with 0.789M benzoic acid with Ka = 6.5 x 10-5 and 0.659M…

A: Given, Concentration of Benzoic acid = 0.789 M Concentration of Sodium benzoate = 0.659 M Ka = 6.5 x…

Q: A 1.000L buffer is made of 0.7 M CH3COOH and 0.6 M CH3COONa . What is the resulting pH of this…

A: The given question can be solved by following certain steps: (1)  The salt dissociates in the form…

Q: The pK, value for HCN is 9.40. Would a buffer prepared from HCN and KCN with a pH of l1.4 be…

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Q: Stårting with 0.750L of a buffer solution containing 0.35 M benzoic acid (CH5COOH) and 0.30 M sodium…

A: Concentration of HCl added in the solution = Moles of HCl/Volume = 0.12mol/0.750L = 0.16M From the…

Q: What is the molar ratio of CH;COOH to CH3COONA that should be used in order to prepare an acetic…

A: Given-> pH = 4.00 Ka(CH3COOH) = 1.8 × 10-5

Q: a buffer is created with 0.450 CH3COOH and 0.380M CH3COO- calculate the pH CHANGE if 0.042 mol NaOH…

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Q: What is the pOH of a buffer made of 1.7E-1 M (CH3)3N(aq) and 5.4E-1 M (CH3)3NHCl(aq)? K for (CH3)3N…

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Q: What is the pH of a buffer solution consistig of 0.035 M NH3 and 0.050 M NH4 + ? (Ka for HN4+ = 5.6…

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Q: What is the pH of a buffer solution prepared by dissolving 33.7 g NaCH3COO in a sufficient volume of…

A: Solution -

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.