A solution A contains 0.02mol/dm3 CH3COOH(aq) and 0.2mol/dm3 CH3COONa(aq)   Calculate the PH of the solution which results from the addition of 50cm3 of 0.040 mol/dm3 aqueous sodium hydroxide to solution A.  Ka for ethanoic acid  = 1.7 x 10-5 mol/dm3  What is the meaning of Ka?

Q: Calculate the pH of a buffer solution containing 10.0 cm3 of 0.100 mol dm–3 NaOH and 20.0 cm3 of…

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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…

A: Given that, Mass of formic acid = 0.3654 g Molecular mass of formic acid = 46.03 g/mol Volume of…

Q: 5.)Shortly after the dissolution of lead(IV) oxide, the dissolved Pb will react with water to form…

A: EPA is the Environmental Protection act. For environmental and sustainable welfare under EPA limits…

Q: Buffers that are based on 3-morpholinopropanesulfonicacid (MOPS) are often used in RNA analysis. The…

A: The pH range of the buffer solution is 6.5 to 7.9 The pKa value gives us the idea of the acidic…

Q: For CO2 in the atmosphere at 25 degrees C, kH = 3.4 x 10-2 mol L-1 atm-1 and the partial pressure of…

A: Given Data: Henry's constant, kH = 3.4 x 10-2 mol L-1 atm-1 Partial pressure of CO2 = 0.000405 atm =…

Q: At temperature 25°C, 0.02 M hydrazine, N2H4 solution is 0.69% ionised. Calculate the i.…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: Use the following experimental titration data to calculate the concentration of the acid being…

A: The neutralisation reaction taking place can be written as, => HC2H3O2 + NaOH ------->…

Q: Your research advisor asks you to prepare a buffer solution at pH = 12.5 with capacity of about…

A: To make a buffer of desired pH/pOH with best buffer capacity, that acid /base should be used which…

Q: A solution (total volume = 1L) of 0.4 M NH3 contains 12.78 g of NH4CI (MW = 53.491 g/mol). Kb = 1.8…

A: First we would Calculate initial pH of solution before adding HCl.  Then pH after adding HCl is…

Q: Please check my answers and help me with question iii.

A: Given:Concentration of acetic acid (M1) = 0.100Concentration of methyl amine(M2) =?Volume of acetic…

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…

A:

Q: Calculate the pH of the solution that results when 40 cm' of 0.05 mol dm hydrochloric acid solution…

A: mmoles of HCl added = 40 x 0.05 = 2  mmoles of NaOH added = 10 x 0.1 = 1  Total volume after mixing…

Q: the pH of a 100mL buffer solution containing 0M HC2H3O2 and 1.0M NaC2H3O2 after 30mL of 1.0M NaOH…

A: Given question is based upon acidic buffer . So we will use Henderson-Hasselbalch equation.

Q: A0.114 M aqueous solution of CuSo, was found to have a 3.838 pH in the laboratory. Using this data,…

A: Copper sulfate is salt of a weak base, Cu(OH)2, and strong acid, sulfuric acid. On hydrolysis of…

Q: The pH and Kh of 0.1N NH4CI solution, if Kb for NH4OH at 25°C is 1.8x10-5 will be respectively equal…

A: pKb = - log Kb = - log ( 1.8 x 10-5) = 5 - 0.26 = 4.74 C = 0.1 N For salt NH4Cl pH = 0.5 (pKw  - pKb…

Q: Both functional groups of salicylic acid ionize in water, with Ka = 1.0 × 10^-3 for -CO2H group and…

A: Given: Ka for –CO2H group = 1.0 x 10-3 Ka for –OH group     = 4.2 x 10-13 Solubility of salicylic…

Q: Acetic acid is a weak acid that partially dissociated in water according to equation B1-2, with an…

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Q: 2. Phoebe was tasked to ensure that an enzyme responsible for keeping her species from extinction…

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Q: One drop, 0.200 cm3, of 1.00 mol dm-3 of aqueous sodium hydroxide, NaOH, solution is added to 25.0…

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Q: Calculate the pH when 1.35 g of C6H5COONa (FW = 144.1 g/mol) is added to 38 mL of 0.50 M benzoic…

A: The pH can be calculated  as follows

Q: If 25,0 cm3 of the NH3 (concentration 0,10 mol∙dm–3) is titrated with the HCl (concentration 0,10…

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Q: Malin just discovered a new protein, Malinase and for it not to unfold and lose its function, he…

A: Given the required pH of the buffer solution = 11.90 Volume of the buffer required = 50.0 mL Total…

Q: Consider an amphoteric hydroxide, M(OH), (s), where M is a generic metal. M(OH), (s) = M²+(aq) + 2…

A: The reaction is as follows: M(OH)2(s)⇌M2+(aq)+2OH-(aq) 1) Calculation of concentration of OH- at pH…

Q: Ethylamine (C2H5NH2) has a Kb value of 4.5x10–4. Calculate the pH of a buffer solution that is…

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Q: A 250 cm volumetric flask contains exactly 200,0 cm3 of a 0,025 mol.dm sulphuric acid solution.…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: 9. wo samples of the same soil is subjected to pH analysis using a pH meter, the first is analysed…

A: A multiple choice question based on general chemistry that is to be accomplished.

Q: What is the pH of an acidic mixture containing 0.062 M hydrazoic acid (Ka = 1.9 * 10-5) and 0.062 M…

A: Henderson-Hasselbalch equation explains the relationship between  of solution and  of acid. For a…

Q: A) Show calculations below for the pH of a solution created by mixing 200.0 mL 0.400 M HC2H3O2 (aq)…

A: Explanation Acidity and pH scale Acidic strength means the tendency of an acid to give H3O+ or H+…

Q: Calculate the concentration of A when chemical AB is dissolved in pure water. Ksp =  0.00001331…

A: AB2 dissociates in an aqueous solution when it is dissolved in water, as follows: AB2s  ⇔ A2+aq +…

Q: Propanoic acid, C₂H5COOH, is a weak acid, with Ka = 1.35 x 10-5 mol dm-³. i) Write an expression for…

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Q: Write the equilibrium-constant expression Kc for Cd2+(aq) + 4 Br-(aq) => [CdBr4]2-(aq).

A: The equilibrium constant (Kc) is the ratio of the equilibrium concentrations of products over the…

Q: Calculate the pH when 1.77 g of C6H5COONa (FW = 144.1 g/mol) is added to 48 mL of 0.50 M benzoic…

A: Ka = 6.5 x 10-5 pKa = - log Ka = - log (6.5 x 10-5) = 4.187

Q: Water sample from different river water was subjected to a qualitative alkaline analysis by…

A: To determine the solutes present in the given water samples and the molar concentration of the…

Q: Ethylamine (C2H5NH2) has a Kb value of 4.5x10–4. Calculate the pH of a buffer solution that is…

A: Buffer is the solution of mixture of weak acid/weak base with its salt of strong base/strong acid

Q: Given that the Kf for [Ni(H2O)5(NH3)]2+ is 501 and Ka for NH4+ is 2.0 x 10-5, what is the…

A: Given data, Ka for NH4+=2.0×10-5Kf for [Ni(H2O)5(NH3)]2+=501

Q: A buffer solution was made by dissolving 10 g of sodium acetate (CH3COONa) in 100 ml of 1.0 M Acetic…

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Q: Calculate the pH of the mixture containing 12.0mL 0.125M NH,Br(aq), 15.0mL 0.175M NH3(ag), and 2.5mL…

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Q: One strategy for dealing with the acidification of lakes is periodically to add powered limestone…

A: Solution - According to the question - Given -  Ksp expression for CaCO3 is Ksp = [Ca2+] [CO32-]…

Q: Calculate the % relative error in hydronium ion concentration by using concentrations instead of…

A: Given Ka, Acetic Acid → 1.75×10-5 Ammonium ions → 5.70×10-10 Chloroacetic Acid → 1.36×10-3…

Q: 2. Phoebe was tasked to ensure that an enzyme responsible for keeping her species from extinction…

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

Q: The ionization constant (Ka ) equation of a monoportic weak, HA, acid is given by ca2 K = (1-0) The…

A: The solution is given below -

Q: Please complete the calculation of the pH of the equivalence point below. Concentration of NaOH…

A: Aspirin is an organic compound containing carboxylic acid group. The chemical name of aspirin is…

Q: Calculate the pH of the solution that results from the mixture of 175.0 mL of 0.10 M C2H5NH2 and…

A: Volume of C2H5NH2 = 175.0 ml Molarity of C2H5NH2 = 0.10 M Volume of C2H5NH3Cl = 275.0 ml Molarity of…

Q: Consider the titration of 25.00 cm3 of 0.10 M CH3COOH(aq) with 0.20 M NaOH(aq) at 25 °C. Calculate…

A: The concept here is the titration of weak acid v/s strong base.  1 cm3 = 1 ml

Q: When a drop (taken to be 0.20 cm3) of 1.0 M HCI(aq) is added to 25 cm3 of pure water, the resulting…

A: Calculate the number of moles of HCl, ethanoic acid and sodium ethanoate. Number of moles =…

Q: Methyl orange is an indicator used for detecting the pH of acidic solutions. The red, protonated…

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Q: 11.(a) 10.06 cm3 of the stock 0.100 mol dm–3 solution of NaOH was required to fully neutralise 49.5…

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Q: Calculate the molar solubility of AgSCN (Ksp = 1.1 x 10^-12) in a solution maintained at pH 9.00 and…

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Q: Calculate the volume, in milliliters, of 0.170 M NaOH that must be added to 395 mL  0.0583 M…

A: 3-(n-morpholino)propane sulfonic acid [MOPS] is used as a buffer especially in biological systems.…

Q: A weak acid (HA) with a pKa of 4.0 has a distribution constant of 5.2 between an organic and aqueous…

A: The fraction of HA acid in the organic phase at pH 2 and 6 is calculated: