Phosphate systems form essential buffers in organisms. Calculate the pH of a buffer made by dissolving 0.860 mol of NaOH in 0.575 L of 1.00 M H3PO4. The dissociation constants for phosphoric acid are: Ka1 = 7.2 x 10³, K22 = 6.3 × 108, Каз — 4.2 х 10-13

Q: 10⁻⁸) with 0.100 M LiOH. a) What is the pH of the solution before any base has been added? b) What…

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Q: Find the pH of the reaction mixture after the addition of the given volume (see below for your…

A: Given : HCN acid with concentration = 0.12 M and volume = 25 mL = 0.025 L…

Q: Calculate the pH of a solution made by dissolving 26.5 g potassium acetate in 150 mL solution.…

A: We have to calculate the pH of solution.

Q: Calculate the pH of a solution prepared by adding 30.0 mLs of 0.20 M HCl to 50.0 mLs of 0.10 M…

A: Given: Concentration of HCl = 0.20 M Volume of HCl solution = 30.0 mL = 0.030 L…

Q: Calculate the pH of the solution that results when 16.0 mL of 0.46 M nitric acid (strong acid),…

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Q: Calculate the ph of a solution made by adding 0.40g of NaOH to 100 cm^3 of 0.4 mol/dm^3 ethanoic…

A: given, the weight of NaOH = 0.40g volume of ethanoic acid = 100 cm3 = 0.1 dm3 concentration of…

Q: 5. To study the effects of a weakly acidic medium on a culture containing a new strain of bacteria,…

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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…

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Q: 30.0 mL of 0.200 M HCN is placed in an Erlenmeyer flask.  After titrating the solution with 15.0 mL…

A: The reaction taking place is,

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: Calculate the pH during the titration with NaOH after addition of: a. 50 mL of 0.1 mol L-1 NaOH to…

A: Solution: We know that acid-base titration method is most used traditional method to calculate…

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: 2. The student wants to conduct the same titration with chloric (1) acid, HOCI. The acid…

A: Given: The acid constant of the chloric acid is Ka=3.2×10-8 To find, Here when the sodium hydroxide…

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: Which of the following acid/base conjugate pairs could you use to make a buffer solution with a pH…

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Q: A mixture of ascorbic acid (CH706H, K2 = 6.8 X 105) and sodium ascorbate is prepared such that…

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Q: A buffer solution contains 0.10M benzoic acid (C6H5COOH, Ka= 6.3 x 105) and 0.10M potassium benzoate…

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

Q: What is the pH of a buffer made from 0.580 mol of CH,NH, (Kb = 4.4 x 10-4) and 0.250 mol of CH;NH,1?

A: ans: PH  of solution is 11  Explanation : given:  [ch3nh2]= 0.580 mol , [ch3nh3I]= 0.250 mol ,and…

Q: Muscle physiologists study the accumulation of lactic acid [CH₃CH(OH)COOH] during exercise. Food…

A: An acidic substance is the substance that can give H+ ions. They are corrosive and sour in nature.…

Q: A 1.0L buffer is made at 25°C that consists of 0.80 mol of a weak acid HA and 0.80 mol of its…

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Q: Calculate the volume of 0.785 M HCN (KA = 6.2 x 10 10 ) required to prepare 100 ml of buffer…

A: The volume of 0.785 M required = 31.60 mL.

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: Phosphorous acid, H3PO4, is a diprotic oxyacid that is an important compound in industry and…

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

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: Calculate the pH of a buffer solution made from 1.000 g of sodium chlorate NaClO3 and 0.9561 g of…

A: Write the expression for pH. pH = pKa + log[salt][acid] Here, pKa is the negative logarithm of acid…

Q: What volume of 0.0100 M NaOH must be added to 1.00 L of 0.0500 M HOC1 to achieve a pH of 8.00? (K of…

A: Let volume of NaOH be X L  Molarity of NaOH = 0.01 M Molarity of HOCl = 0.05 M Moles = Molarity ×…

Q: 11) Choose the acid below that would make the most effective buffer for a solution to maintain a pH…

A: The solution is given below -

Q: Calculate the pH function of a solution obtained by adding 10 milliliters of 0.1 M acetic acid to 20…

A: We have to calculate the pH of solution

Q: 1. a. What is the pH of a solution prepared by adding 25.0 mL of 0.10 M acetic acid (Ka = 1.8 x 105)…

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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: Calculate the pH of a buffer solution prepared by dissolving 19.50 g of sodium cyanate NaCNO…

A: Mass of NaCNO = 19.50 g The number of moles of NaCNO, n = mass of NaCNO/molar mass of NaCNO…

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: For the titration of 50.00 mL of 0.106 M NH3 with 0.225 M HCl, calculate the pH when neutralization…

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Q: A student titrates 20.0 mL of 1.0 M NaOH with 2.0 M formic acid, HCOOH (K, = 1.8 x 10 4).…

A: The equivalence point is the theoretical value of the volume of acid required to titrate the base,…

Q: Calculate the pH during the titration of 20.00 mL of 0.1000 M ethylamine, C2H5NH2(aq), with 0.2000 M…

A: Volume of ethylamine = 20.00 mL  Molarity of ethylamine = 0.100 M Molarity of nitric acid = 0.200 M…

Q: 1. A 45.0 mL sample of 0.200 M Lysergie Acid Diethylamide, LSD, is titrated with 0.200 M of NaOH.…

A: It is an example of acid base titration reaction, in which by the help of known acid we find the…

Q: 1. A 45.0 mL sample of 0.200 M Lysergic Acid Diethylamide, LSD, is titrated with 0.200 M of NaOH.…

A: A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate…

Q: suitable

A: Buffer solution worked at pH =  pKa-1 to pKa +1  Here pH = 7.0 then range should be 6 to 8 at this…

Q: This is the structure of the antibiotic flucloxacillin (mw 454, solubility at 25°C = 4.4 x 10-4 M).…

A: The given antibiotic molecule has an acidic carboxylic acid (-COOH) group for which it has an acidic…

Q: What is the pH of a mixture that contains 0.20 M Ca(OH)2 and 0.20 M LiOH?

A: Strong bases completely ionize when dissolved in water. Both the base, Ca (OH)2 and LIOH are strong…

Q: Suppose that you want to titrate a sample of vinegar with standard sodium hydroxide solution to…

A: For titration of weak acid ( Vinegar ) and Strong base ( Sodium hydroxide ) suitable indicator is…

Q: 5. What volume of 1.50 M NaOH must be added to 200.0 mL of 1.00 M glycolic acid (HC2H3O3) to produce…

A: Given : Concentration of NaOH = 1.50 M Concentration of glycolic acid = 1.00 M Volume of glycolic…

Q: A student is preparing to titrate 25.00  mL of 0.2 M  NaOH.   He has options to use among 3 weak…

A: NaOH is titrated with three monoprotic weak acids To determine which is the best titrant :

Q: Q 1(h) Which buffer system will have the greatest buffer capacity at pH 5.5? Acetic acid/sodium…

A: h) Buffer capacity is more when it's pKa is nearer to its pH. pH = -log(H+) and  pKa= - log (Ka)…

Q: A chemistry graduate student is given 300. mL of a 0.80 M methylamine (CH, NH,) solution.…

A: Given: Volume of solution = 300 mLMolarity of CH3NH2 = 0.80 MpH of solution = 10.92Kb of CH3NH2 =…

Q: Tris(hydroxymethyl)aminomethane [(HOCH2)3CNH2, MW = 121.14] is commonly referred to as Tris or THAM.…

A: Given: The molarity of HCl = 0.5 M. Volume of HCl = 100  mL = 0.1 L Total volume of the buffer = 1 L…

Q: If a 50 mL solution of 0.1 M HCN (Ka = 6.2 x 10-10) is titrated with 0.1 M NaOH, what is the pH of…

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Q: 9 If the dissociation constant of a weak acid is 1.4 x 10-5, at what ratio should you adjust the…

A: Dissociation constant of a weak acid is 1.4 ×10–5. Given some ratios of concentration of weak acid…

Q: Calculate the pH at the equivalence point in titrating 0.069 M solutions of each of the following…

A: The explanation is given below-

Q: Methanoic acid, HCOOH, has a K₂ value of 1.58 x 104 mol/L. What ratio of methanoic acid and sodium…

A: Consider the given information is as follows; Ka of HCOOH = 1.58×10-4 mol/L pH = 4 Methnoic…