Given the pKa of hypochlorous acid, HOCl, is 7.54.   What is the pH of a solution which consists of 0.20 M HOCl and 0.70 M OCl-?

Q: An analytical chemist is titrating 102.2 mL of a 0.5200M solution of nitrous acid (HNO,) with a…

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Q: An analytical chemist is titrating 63.0 mL of a 0.8900M solution of hydrazoic acid (HN,) with a…

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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: Calculate the change in pH when 4.00 mL of 0.100 M HC1(aq) is added to 100.0 mL of a buffer solution…

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Q: buffer solution is composed of 1.501.50 mol of acid and 7.757.75 mol of the conjugate base. If the…

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Q: An analytical chemist is titrating 189.5 mL of a 0.6500M solution of ammonia (NH,) with a 0.8000M…

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Q: The preparations of two aqueous solutions are described in the table below. For each solution, write…

A: Note: As per the guidelines, solution of 1st question has been made. For the expert solution of…

Q: A student has a sample of 0.50 M lactic acid (HC3H5O3). She adds 10 mL of this solution to 40 mL of…

A: Given : Concentration of lactic acid = 0.50 M Volume of lactic acid solution used = 10 mL = 0.010 L…

Q: An analytical chemist is titrating 200.5 mL of a 0.3400M solution of hydrazoic acid (HN,) with a…

A: Here we use the Henderson Hasselbach equation,pH = pKa + log [Salt]/[Acid] Initial Acid = 200.5 x…

Q: An analytical chemist is titrating 216.4 mL of a 0.4800 M solution of cyanic acid (HCNO) with a…

A: Given: Volume of HCNO = 216.4 mL Concentration of HCNO = 0.480 M Volume of NaOH = 363.3 mL…

Q: You are studying a clear solution and you added the pH indicator methyl violet. The colour range of…

A: The color of a solution of pH 0.2 is needed to be determined on the addition of an acid-base…

Q: What is the pH for the solution made from 11.10 mL of 0.2780 M NaOH solution mixed with 70.20 mL of…

A: Step 1: Volume of NaOH = 11.10 mL = 0.0111 L.Concentration of NaOH = 0.2780 M.Volume of ammonium…

Q: An analytical chemist Is titrating 150.5 mL of a 0.1400M solution of aniline (CH,NH,) with a 0.4000M…

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Q: An analytical chemist is titrating 156.4 mL of a 0.3600 M solution of formic acid (H,CO,) with a…

A: Answer is explained below. Given that, concentration H2CO2 (formic acid) = 0.3600 M & volume of…

Q: The K, of phosphoric acid is 6.92 x 103. Calculate the pH of a buffer solution that is 0.44 M…

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Q: What is the concentration (in molarity) of H+, HCO3−, and CO32–, in a solution that is initially…

A: Given the initial concentrations of  H2CO3 = 0.0100 M initial concentrations of  Na2CO3 = 0.000010 M…

Q: An analytical chemist is titrating 214.6 mL of a 1.200M solution of propionic acid (HC,H,CO,) with a…

A: By the reaction of Propanoic acid and KOH potassium propanoate and salt.sodium propanoate and…

Q: A solution (total volume = 1L) of 0.4 M NH3 contains 12.78 g of NHẠCI (MW = 53.491 g/mol). Kb = 1.8…

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Q: the final volume equals the initial volume of the solution plus the volume of NaOH solution added. ?

A: Given, Molarity of Acid(M) = 0.4500 M Volume of Acid(V) = 78.9 mL mmol of Acid =  M × V   = 0.4500 ×…

Q: An analytical chemist is titrating 129.5 mL of a 0.2500M solution of nitrous acid (HNO₂) with a…

A: Well, we will first calculate the millimoles of both acid and base to determine the excess reagent.…

Q: What is the pH of a solution prepared by mixing 150 mL of 0.10 M HCl with 300 mL of 0.20 M sodium…

A: Given, 150mL of 0.1M HCl 300mL of 0.1 NaOAc

Q: Calculate the pH of solution that is 0.200 M NH3 and 0.300 M NH4Cl (pKa = 9.245)

A: pH: It can be defined by saying that the potential of hydrogen ions in any solution . Based upon the…

Q: A solution is formed by adding 2.70 grams of solid barium cyanide, Ba(CN)₂, to 250.0 ml of 0.110M…

A: Given: Mass of barium cyanide (Ba(CN)2) = 2.70 grams The volume of sodium cyanide (NaCN) = 250.0 mL…

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: An analytical chemist is titrating 107.3 mL of a 0.4400M solution of piperidine (C,H1NH) with a…

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Q: An analytical chemist is titrating 243.9 mL of a 0.3300M solution of ammonia (NH,) with a 0.8900M…

A: The above-given problem can be solved using the Henderson-Hesselbalch equation. Given,pKb of ammonia…

Q: An analytical chemist is titrating 88.8 ml. of a 0.4900 M solution of piperidine (C,HNH) with a…

A: When a strong base is added to a weak acid solution or a strong acid is added to a weak base, then…

Q: An analytical chemist is titrating 59.1 mL of a 0.6700 M solution of ammonia (NH,) with a 0.4500 M…

A: Given : Concentration of NH3 = 0.6700 M Volume of NH3 solution = 59.1 mL = 0.0591 L…

Q: An analytical chemist is titrating 79.7 mL of a 0.4500M solution of ammonia (NH3) with a 0.1600M…

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Q: An analytical chemist is titrating 205.8 mL of a 0.09100M solution of propylamine (C,H,NH,) with a…

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Q: An analytical chemist is titrating 57.8 mL of a 0.6200M solution of methylamine (CH,NH,) with a…

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Q: For a weak acid, when does the pH equal the pKa?

A: Answer: For this we need to know Henderson-Hasselbalch equation . Explanation:…

Q: 11.An acid-base equilibrium system is created by dissolving 0.20mol CH3COOH in water and diluting…

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Q: An analytical chemist is titrating 136.2 mL of a 0.4700M solution of propylamine (C,H,NH,) with a…

A: no of moles of C3H7NH2  = molarity * volume in L                                      =…

Q: An analytical chemist is titrating 151.8 mL of a 0.1600M solution of piperidine (C,HNH) with a…

A: Answer:  2.00

Q: An analytical chemist is titrating 179.6 mL of a 0.8400M solution of cyanic acid (HCNO) with a…

A: Given,  Volume of HCNO = 179.6 mL  Molarity of HCNO = 0.8400 M  Molarity of KOH = 1.200 M  Volume of…

Q: Calculate the change in pH when 9.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution…

A: Given,

Q: Which of the following is true of a buffer solution that contains equivalent amounts of acid and…

A: buffer solution that contains equivalent amounts of acid and conjugate base means [Conjugate base ]…

Q: An analytical chemist is titrating 216.5 mL of a 0.9400M solution of propionic acid (HC,H,CO,) with…

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Q: Given that Ka’s for hydrofluoric acid (HF) and boric acid (H3BO3) are 6.3 × 10^–4and 5.4 × 10^–10,…

A: a) Given: Volume of HF=50 mL Concentration of HF= 0.2 M Concentration of NaH2BO3= 0.5 M Volume of…

Q: An analytical chemist is titrating 233.8 mL of a 0.9100M solution of hydrazoic acid (HN3) with a…

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Q: An analytical chemist is titrating 88.2 mL of a 0.2300M solution of nitrous acid (HNO₂) with a…

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Q: An analytical chemist is titrating 249.7 mL of a 1.000M solution of butanoic acid (HC,H,CO,) with a…

A: 249.7 mL of 1.000 M butanoic acid is titrated with 117.2 mL of 0.8200 M of NaOH solution .The pKa…

Q: A 100.mL of 0.250 M HNO2 is added to 200.mL of 0.100 M NaNO2. What is the concentration of…

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Q: Calculate the pH of a solution formed by adding 2.00 grams of solid potassium cyanide, KCN, to 180.0…

A: Given,  adding 2.00 grams of solid potassium cyanide, KCN, to 180.0 ml of 0.340 M hydrocyanic acid…

Q: An analytical chemist is titrating 150.6 mL of a 0.4500 M solution of ammonia (NH,) with a 0.6900 M…

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Q: An analytical chemist is titrating 68.1 mL of a 0.6500M solution of propionic acid (HC,H,CO,) with a…

A: The given data is as follows: The concentration of propionic acid = 0.6500 M The volume of propionic…

Q: (a) Using the expression Ka=[H+][A−]/[HA], explain how to determine which solution has the lower pH,…

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