A student titrates an unknown weak acid, HA, to a pale pink phenolphthalein end point with 25.0 mL of 0.100 M NaOH. The student then adds 13.0 mL of 0.100 M HCl. The pH of the resulting solution is 4.70. How is the value of pKafor the unknown acid related to 4.70?

Q: Consider the titration of a 40.0 mL of 0.189 M weak acid HA (Ka = 2.7 x 10⁻⁸) with 0.100 M LiOH. How…

A: The halfway point of the titration is that point where half of the acids has been reacted. The…

Q: Consider the titration of 30 mL of 0.10 M H2CO3 (H2A) with 50 mL of 0.10 LiOH. What would the pH be…

A: In this question, we want to determine the pH of the Solution.  You can see details Solution step by…

Q: An analytical chemist is titrating  109.0mL of a 0.4900M solution of hydrazoic acid HN3 with a…

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Q: A chemist titrates a 25.0 mL sample of 0.239 M benzoic acid (C6H5COOH) against a 0.100 M solution of…

A: Given: Volume of benzoic acid = 25.0 mL Concentration of benzoic acid = 0.239 M Concentration of…

Q: What mass (in grams) of sodium acetate (CH3COONa) must be added to  100.00 mL  of a 0.115 M solution…

A: Mass (in grams) of sodium acetate (CH3COONa) must be added to  100.00 mL of a 0.115 M solution of…

Q: In titrating 10 ml of 0.1 M neutral amino acid (pKal= 2, pKa2 = 8),the pH after the addition of 5 ml…

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Q: Calculate the pH during the titration of 40.00 mL of 0.1000 M propanoic acid after adding the…

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Q: A 30.0 mL sample of 0.165 M propanoic acid (Ka = 1.3x10^-5) is titrated with 0.300 M KOH. Calculate…

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Q: Determine the pH at the point in the titration of 40.0 mL of .200 M HC4H7O2 with .100 M Sr(OH)2…

A: The reaction between acid and base is written below. 2C3H7COOH (aq) + Sr(OH)2 (aq) ⇌ 2H2O (l) +…

Q: Phosphorous acid, H, PO, (aq), is a diprotic oxyacid that is an important compound in industry and…

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Q: A 1.35 L buffer solution consists of 0.175 M butanoic acid and 0.336 M sodium butanoate. Calculate…

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Q: a 25ml sample of 0.1000mol/l propanoic acid in a flask is titrated with  0.1000mol/l  NaOH solution,…

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Q: What is the pH at the equivalence point when 75.0 mL of a 0.150 M  solution of acetic acid (CH3COOH)…

A: At the equivalence point, the number of mole of base present is equal to the number of mole of the…

Q: A flask contains 50 mL of a buffer that is 0.10M in acetic acid and 0.20 M in acetate ion. What will…

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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: Assume that 32.0 mL of a 0.10 M solution of a weak base B that accepts one proton is titrated with a…

A: Acid and base react with each other to form salt and water. The nature of salt depends on the nature…

Q: Benzoic acid-sodium benzoate buffer is prepared by mixing 0.4 mol of benzoic acid (Ka = 6.3 x 10-5…

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Q: grams

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Q: You are titrating 20.00 ml of 0.200 M HOAc with 0.200 M NaOH. What is the pH after addition of 20.00…

A: Given, Volume of acetic acid, HOAc = 20.00 mL = 0.02 L   (1mL = 0.001 L) Molarity of acetic acid,…

Q: A 65.20-mL sample of a 0.251 M solution of acetic acid (HC2H3O2) which is a weak acid with an acid…

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Q: A 50.0-mL sample of 0.50M acetic acid, HC2H3O2, is titrated with a 0.150 M NaOH solution. Calculate…

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Q: Consider the titration of 100.0 mL of 0.250 M aniline ( Kh= 3.8 x 1010 with 0.500M HC1. For…

A: Given: Concentration of HCl = 0.500 M Concentration of weak base aniline i.e. B = 0.250 M Volume of…

Q: Consider the titration of HCOOH with NaOH. A 125 mL sample of 0.27 M HCOOH is titrated with 0.18 M…

A: Given the titration of HCOOH with NaOH ,as NaOH is strong base , while formic acid is not stong acid…

Q: 1. If a 28.0 mL sample of 0.381 M methylamine, CH3NH2, is titrated with 0.370 M nitric acid. At the…

A: The scale analogue to the pOH scale which is equivalent to the negative base 10 logarithm of the…

Q: Calculate the pH during the titration of 20 mL of 0.1000 M dimethylamine, (CH3)2NH(aq), with 0.2000…

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Q: What is the pH of a weak base-strong acid titration when 20.0 mL of 0.56 M of NaOCl (Ka = 3.0*10-8)…

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Q: 1. Acetate buffers are used in biochemical studies of enzymes and other chemical components of cells…

A: The Ka value of acetic acid is 1.8 × 10-5.pKa = -log(Ka) = -log(1.8 × 10-5) = 4.74.concentration of…

Q: The half-equivalence point of a titration occurs half way to the equivalence point, where half of…

A: The half-equivalence point of a titration occurs half way to the equivalence point, where half of…

Q: A 25.0-mL sample of 0.150 M hydrazoic acid is titrated with a 0.150 M NaOH solution. What is the pH…

A: The explanation is given below-

Q: Calculate the pH during the titration of 25.00 mL of 0.1000 M HCN(aq) with 0.1000 M KOH(aq) after…

A: First calculate moles of each reactant by multiply MOLARITY and volume  then find out limiting…

Q: A 30.0 mL sample of 0.165 M propanoic acid (Ka = 1.3x10^-5) is titrated with 0.300 M KOH. Calculate…

A: The reaction between propanoic acid and KOH is written as: CH3CH2COOH + KOH →CH3CH2COOK + H2O    As…

Q: A student titrates 20.0 mL of 1.84 M HCl with a weak base (Kb = 2.33 x 10−6). The weak base and HCl…

A: Given values: Volume (V1) of HCl = 20 mL Molarity (M1) of HCl = 1.84 M Kb = 2.33 × 10-6 Volume (V2)…

Q: you add 1.00 mL of 1.00 M HCl to 100.0 mL of buffer solution that is 0.100 M acetic acid and 0.100 M…

A: Given-> Volume of HCl = 1.00 ml Molarity of HCl = 1.00 M Volume of buffer = 100.0 ml Molarity of…

Q: What is the pH at the equivalence point when 75.0 mL of a 0.225 M  solution of acetic acid (CH3COOH)…

A: We are having  the titration of weak acid with the strong base that will produce the salt of weak…

Q: An analytical chemist is titrating 100.0mL of a 0.3300M solution of hydrazoic acid (HNg) with a…

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Q: What is the pH at the equivalence point when 75.0 mL of a 0.200 M  solution of acetic acid (CH3COOH)…

A: At the equivalence point, the number of mole of base present is equal to the number of mole of the…

Q: Consider a titration of formic acid (HCOOH, Ka = 1.8 x 10-4) with KOH in water.  If 40.00 mL of the…

A: Given that the volume of KOH require at equivalence point is 40.00 mL. Therefore, 20.00 mL of KOH is…

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: Moly Cule is titrating 0.2 M of a strong base (NaOH) into 100 ml of a solution of 0.1M weak acid…

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Q: Consider the titration of 120.0 mL of 0.100 M HI by 0.250 M NaOH. Part 1 Calculate the pH after…

A: Solution- part 1; pH after 35.0 mL of NaOH has been added. Number of mmol of NaOH ;35mL×0.250…

Q: When a 24.4 mL sample of a 0.357 M aqueous hydrocyanic acid solution is titrated with a 0.322 M…

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Q: What mass (in grams) of sodium acetate (CH3COONa) must be added to 100.00 mL of a 0.118 M…

A: Given: Volume of acetic acid = 100.0 mL concentration of acetic acid = 0.118 M pH = 4.70 Ka =…

Q: A 30.0 mL sample of 0.165 M propanoic acid (Ka = 1.3x10^-5) is titrated with 0.300 M KOH. Calculate…

A: Molarity of propanoic acid = MP = 0.165 M Volume of propanoic taken = VP  = 30.0 mL No of moles of…

Q: A 25 mL sample of 0.15M hydrazoic acid is titrated with a 0.15M NaOH solution. What is the pH after…

A: Answer:- This question is answered by using the simple concept of calculation of pH during the…

Q: The titration of CH3COOH (Ka = 1.76x10-4; pKa = 3.754; Kb = 5.68x10-11) with NaOH is an example of a…

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Q: A 25.00 mL aliquot of 0.0900 M acetic acid is titrated with a 0.100 M KOH. Calculate the pH when…

A: milli moles of CH3COOH = 25 x 0.09 = 2.25 milli moles of KOH added = 25 x 0.1 = 2.5 2.5 - 2.25 =…

Q: A student titrates 25.0 ml. of an unknown acid with 0.1 M KOH, The student determines that it takes…

A: The given information is: Volume of unknown acid = 25.0 ml Molarity of KOH = 0.1 M Volume of KOH…

Q: Calculate the pH for the complete titration of 100.0 mL of 0.122 M hydrazine, H2NNH2, with 0.200 M…

A: The Bronsted-Lowry acid-base theory was purposed by Bronsted and Lowery is called Bronsted-Lowry…

Q: Calculate the pH at the equivalence point in titrating 0.039 M solutions of each of the following…

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Q: A certain weak acid, HA, with a Ka value of 5.61 x 10-6 is titrated with NaOH (a) A solution is…

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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.