Lactic acid, C3H6O3, is found in sour milk. 100 mL of a 0.05 M lactic acid solution with a pH of 4.11 contains 1 g of sodium lactate, (NaC3H5O3). According to this, a) Write down the possible reactions of lactic acid and sodium lactate in water. b) Calculate the Ka value of lactic acid. c) Calculate the change in pH (DpH) when 0.05 mol HCl is added to this solution. (MNaC3H5O3)= 112 g/mol

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: An analytical chemist is titrating 53.0 mL of a 0.3400M solution of propionic acid (HC,H,CO,) with a…

A: Buffer solution not  formed

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 161.1 ml. of a 0.6100M solution of formic acid (H,CO,) with a…

A: Given data,Molarity of HCOOH=0.61MVolume of HCOOH=161.1mL=0.1611LMolarity of NaOH=0.46MVolume of…

Q: An analytical chemist is titrating 83.1 mL of a 0.2800M solution of piperidine (C5H₁0NH) with a…

A: pH= -log [H+]

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: A solution is prepared that is initially 0.17 M in trimethylamine ((CH,) N), a weak base, and 0.20 M…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: A buffer solution is prepared which is 0.260 M both in lactic acid (CH3CHOHCO2H) and in sodium…

A: Given,Molarity of lactic acid ( CH3CHOHCO2H ) = 0.260 MMolarity of sodium lactate ( CH3CHOHCO2Na ) =…

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

A:

Q: A 0.54 M solution of chloroacetic acid, CICH2 CO2H, has a pH of 1.57. Calculate K, for the acid. %3D

A: Given: The molarity of the solution of chloroacetic acid = 0.54 M The pH of the solution = 1.57 We…

Q: 13.2)  a) A 0.439-M aqueous solution of a weak acid has a pH of 4.56. Calculate Ka for the acid.…

A: Please find the solution as hand written note.

Q: In the laboratory, a general chemistry student measured the pH of a 0.474 M aqueous solution of…

A:

Q: NEXT > 652 mg of aspirin (HC₂H₂O) is dissolved in an aqueous solution of 237 mL aqueous solution.…

A: The explanation is given below-

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…

A:

Q: An acid solution at an initial concentration of 0.015 M. the pH of the acid solution at equilibrium…

A:

Q: A buffer solution is prepared by dissolving 1.000 g of sodium acetate (CH3COONa) into 100.00 mL of a…

A: Step 1:Solution of weak acid and its conjugate base can only act like a buffer solution when ratio…

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: When 14.08 mL of 0.1594 M NaOH is added to 25.00 mL of 0.1235 M HX (an unknown weak acid), the…

A: Given, Volume of NaOH = 14.08 mL Molarity of NaOH = 0.1594 M Volume of unknown weak acid =25.00 mL…

Q: In the laboratory, a general chemistry student measured the pH of a 0.590 M aqueous solution of…

A:

Q: An aqueous solution is prepared to be 0.408 M in sodium formate and 0.291 M in acetic acid. (1) Is…

A: The objective of the question is to determine whether the given solution is a buffer solution, to…

Q: Calculate the pH change that results when 15 mL of 2.0 M HCl is added to 560. mL of each of the…

A: The formula to calculate the pH is

Q: a) Eggshells, CaCOs, are not very soluble but they will dissolve to a small degree. Predict if…

A: To predict whether the aqueous solution of crushed egg cell will be acidic, basic or neutral in…

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

A:

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

A:

Q: Consider the titration of formic acid, HCHO, with barium hydroxide. (a) Write a balanced net ionic…

A: Given: Titration of HCOOH with Ba(OH)2.

Q: n each of the following questions, assume that there is no volume change when HCl is added to water…

A: ANSWER : (a) Concentration of HCl = Concentration H+ = moles of HCl / Volume of solution = 0.091…

Q: Calculate the pH of the following buffer solutions:

A: a)Moles of KH2PO4 =2.668g/136gmol-1 =0.019617 mol Moles of K2HPO4=2.095g/174.2gmol-1 =0.0120264 mol…

Q: A solution is prepared that is initially 0.095M in methylamine (CH3 NH,), a weak base, and 0.38M in…

A: we need to fill the given table and calculate pH of the solution

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: A solution is prepared by dissolving 0.23 mol of hypochlorous acid and 0.27 mol of sodium…

A: Introduction to Buffer solution- A weak acid and its conjugate base, or vice versa, are combined to…

Q: An analytical chemist is titrating 225.8 mL of a 0.5300 M solution of butanoic acid (HC,H,CO,) with…

A: Given that: Concentration of butanoic acid = 0.5300 MConcentration of KOH base = 0.8200 MVolume of…

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

A:

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…