The theoretical pKa of a weak acid is 3.54. Calculate the pKa experimental error of a solution composed of 10 mL of 0.23 M HA, 15 mL of 0.17 M of NaA and 20 mL of water. The measured pH of this solution is 3.17. Note: Report only the numerical answer of the percent without the % symbol.

Q: An analytical chemist is titrating 94.8 mL of a 0.4000M solution of nitrous acid (HNO,) with a…

A: Given : Volume of HNO2 solution = 94.8 mL = 0.0948 L                                      (since 1 L…

Q: Chemistry If you prepare a 500 mL phosphate buffer solution using 3.00g Disodium Phosphate Dihydrate…

A: Given :  Volume of buffer solution = 500 ml  Mass of Disodium Phosphate Dihydrate = 3.00 gm  Mass of…

Q: The acid solution is known to contain 3 moles of HA with a constant of Ka and 1 mol of Na. Of 1 mole…

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

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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: Calculate the molarity of the acid using the titration data. b) If we assume that the titrated…

A: We are given two methods titration method and pH method  We have to find molarity of acid, pH if…

Q: A solution is made by mixing 185 mL of 0.100 M formic acid (Ka = 1.7 x 10-4 ) with 190. mL of 0.100…

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Q: An analytical chemist is titrating 134.4mL of a 0.6500M solution of nitrous acid HNO2 with a 0.7300M…

A: The molarity of an unknown solution can be determined by titrating it with a known solution by using…

Q: A 0.3654 g portion of pure formic acid (CH2O2, FW=46.03 g/mol, Ka=1.77 x 10-4) is dissolved in 50.00…

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Q: Define equivalence point, and describe the steps involved in determining it for weak acid-strong…

A: It is the point at which the amount of base added has completely neutralized the acid solution.At…

Q: An analytical chemist is titrating 152.5 mL of a 0.9200 M solution of nitrous acid (HNO,) with a…

A: pH is used to determine the concentration of hydronium ion.

Q: Calculate the pH of a buffer solution prepared by dissolving 0.20 mole of sodium cyanate (NaCNO) and…

A: Given information,    0.20 mole of sodium cyanate (NaCNO) and 1.0 mole of cyanic acid (HCNO)…

Q: During the titration of 25 mL of 0.1 M maleic acid with 0.1M NAOH. We have studied the plot of alpha…

A: The graph of alpha values and Volume is as follows:

Q: phenolphthalein were added and then it was titrated 3.54 mL of 0.048 M standardized NaOH to the…

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Q: To 20,00 ml of 0,1000 mol/l acetic acid solution (pKa=4,76) 19,98 ml of 0,1000 mol/l sodium…

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Q: Calculate the pH value of the resulting solution by titrating 0.1 molar ammonium hydroxide 100 ml…

A: Given,  [NH4OH] = 0.1 M  Volume of NH4OH = 100 mL  [HCl] = 0.1 M  Volume of HCl = 20 mL  Base…

Q: An analytical chemist is titrating 130.6 ml. of a 0.6000 M solution of piperidine (C,HNH) with a…

A: Given, Volume of piperidine (C5H10NH) = 130.6 mL Concentration of piperidine (C5H10NH) = 0.6000 M…

Q: (iii) 5.0, 25.0, 50.0 and 100.0 g aliquots of MgCl2 were dissolved in 4 separate 250 ml samples of…

A: Reaction of MgCl2 with water: MgCl2 + H2O → MgO + 2 HCl

Q: Write the chemical reactions whose equilibrium constants are K, and K, for imidazole (C, H, N,) and…

A:

Q: Consider the titration of 50.00 mL of 0.100 M hypochlorus acid (HClO) with 0.200 M LiOH, calculate…

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Q: Mass of NaCl needed for 50.0 mL of 0.200 M NaCl solution. (Show calculation below.) Change in pH…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: In the titration of 40.00 mL of 0.600 M KOH with 0.200 M HCI, what is the pH at (1.30x10^2) mL of…

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Q: 5. In Experiment 4, we used titration to determine the total acid content of samples, which we…

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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: Show that the pH at the halfway point is equivalent to titration of a weak acid with a strong base…

A: The reaction of a weak acid with strong base will be like HA + BOH -------> BA + H2O where HA =…

Q: A 25.00 ml solution of 0.1000 M HF, hydrofluoric acid (Ka 6.8 x 104) is added to 12.50 mL solution…

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

A: The chemical reaction can be given as follows: NH2NH2(aq)+HNO3(aq)→NH2NH3+(aq)+NO3-(aq) Molarity of…

Q: 40.0 ml of 0.1100 M NH3 are diluted to 100 ml and titrated with 0.1000 M HCI, calculate the pH after…

A: In the question the given values are as follows : Concentration of NH3 = 0.11 M Volume of NH3 = 40.0…

Q: An analytical chemist is titrating 97.8 mL of a 1.100M solution of nitrous acid (HNO,) with a…

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Q: Prepare 100 mLof a 0.01 M phosphate buffer, pH 7.70, from stock solutions of 0.1 M K2HPO4and 0.2 M…

A: The buffer to be produced is from K2HPO4 and  KH2PO4. Here, K2HPO4 acts as conjugate base and…

Q: n analytical chemist is titrating 160.8 mL of a 1.000 M solution of nitrous acid (HNO,) with a…

A: The question is based on the concept of titrations.   we are titrating  a weak nitrous acid with a…

Q: Why does the dilution of the initial sample (say 75 mL versus 100 mL) not affect in the final…

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Q: A 45.0 ml sample of 0.250 M CH3CH2NH2 was mixed with 32.0 mL of 0.225 M HNO3. Kp = 5.6 x 104 %3D а.…

A: mmol of ethylamine = 45*0.250 = 11.25 = 11.25*10^-3 mol mmol of HNO3 = 7.2 = 7.2*10^-3 mol…

Q: A 45.0 mL sample of 0.250 M CH3CH2NH2 was mixed with 32.0 mL of 0.225 M HNO3. Kb = 5.6 x 104 %3D a.…

A:

Q: An analytical chemist is titrating 159.5 mL of a 1.200 M solution of nitrous acid (HNO,) with a…

A: The is a neutralization reaction which takes place as,…

Q: In a titration 2.7 cm33 of 0.100 mol dm−3−3 sodium hydroxide, NaOH solution is added to 25.0 cm33 of…

A: Consider the given information is as follows; The volume of sodium hydroxide (NaOH) = 2.7 cm3=2.7 mL…

Q: Why is standard qualitative analysis of water is qualitative rather than quantitative?

A:

Q: What volume in mL of 0.2572 M NaOH must be added to 500.0 mL of 0.1000 M chlorous acid (HClO2, Ka =…

A: Given: pH = 2.25 Concentration of HClO2 = 0.100 M Volume of HClO2 = 500.00 mL Concentration of NaOH…

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

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Q: Consider the titration of 50.0 mL of 0.10 M H3A (Ka1 5 5.0 3 10–4, Ka2 5 1.0 3 10–8, Ka3 5 1.0 3…

A: The question is based on the concept of titrations. we are titrating a weak acid with a strong base.…

Q: Calculate the pH of a 1.00L solution containing 0.52M sodium acetate and 0.48M acetic acid after the…

A: Given that, concentration of CH3COONa in 1 L solution = 0.52 M = 0.52 mole L-1 and concentration of…

Q: Calculate the pH at the equivalence point of 50 mL of hypochlorous acid, HCIO, titrated with 31 mL…

A: GIVEN: Volume of HOCl = 50 ml Concentration of HOCl = M Volume of KOH = 31 ml Concentration of KOH =…

Q: A monoprotic weak acid (HA) has a pKa value of 4.896. Calculate the fraction of HA in each of its…

A: The solution is given below -

Q: An analytical chemist is titrating 219.9 mL of a 0.5100 M solution of aniline (CH,NH,) with a 0.1800…

A: Given: Concentration of aniline = [C­6H5NH2] = 0.5100 M Volume of C­6H5NH2 = 219.9 mL pKb for…

Q: An analytical chemist is titrating  145.6mL  of a  1.100M  solution of hydrazoic acid  HN3  with…

A: Given that Molarity of HN3 = 1.100 M Volume of HN3 = 145.6 mL Molarity of KOH = 0.8100 M Volume of…

Q: Calculate the volume, in milliliters, of a 0.770 M KOH solution that should be added to 5.000 g of…

A: Given,  Molarity of KOH = 0.770 M Mass of HEPES = 5 g Molecular weight = 238.306 g/mol pKa = 7.56…

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: 2. In a titration of 50.00 mL of 0.05000 M formic acid, HCOOH with 0.1000 M potassium hydroxide,…

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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…

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Q: Consider the titration of 300.0 mL of 0.500 M NH3 (Kh = 1.8 x 105) with 0.500 M HNO3. What is the pH…

A: Mnmn

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.