Calculate the cocentrations of acetic acid (pKa = 4.76) and sodium acetate necessary to prepare a 0.2 M buffer solution at pH 5.0.
Q: Calculate the normality of a solution that contains 4.5 g of (COOH)2 in 3000 mL of solution? (Assume…
A: The concentration of the solutions is measured by different methods like finding molarity,…
Q: How many milliliters of 0.0050 N KOH are required to neutralize 25 mL of 0.0050 N H2SO4? To…
A: Molarity can be used to calculate the volume of solvent or the amount of solute. The relationship…
Q: How many ml 2M NaOH would it take to neutralize 20 ml of 0.5M HCI?
A: Given: Concentration of NaOH , M1 = 2 M Volume of NaOH, V1 =? Concentration of HCl, M2 = 0.5 M…
Q: Assuming equal concentrations of conjugate base and acid, which one of the following mixtures is…
A: Buffers are the solutions that resist the change in pH after the addition of a small amount of acid…
Q: Calculate the pH of the following buffers containing; 2.95M HC2H3O2 and 1.5M NaC2H3O2 ka = 1.8X10 ka…
A: According to Handersen Hasselbalch equation pH can be calculated using the following formula pH= pKa…
Q: 439 mL of 0.270 M hydrochloric acid is exactly neutralized with 0.920 M potassium hydroxide…
A: Given Values: Volume of HCl = 439 ml The concentration of HCl = 0.270 M Concentration of NaOH =…
Q: What is the relationship betweenpKa and the useful range of a buffer?
A: The strength of an acid in a solution can be expressed in terms of the acid dissociation constant…
Q: What is the molarity of a NaOH solution if 48.0 mLneutralizes 35.0 mL of 0.144 M H2SO4?
A: An acid–base reaction is a chemical reaction that occurs between an acid and a base. It can be used…
Q: Assuming the molar extinction coefficient for para-nitrophenyl phosphate (PNP) is 55,290 mol "dm…
A: Given Values: ε=55290 c = ?A = 0.77 l = 1.5 cm
Q: 50X TBE is 87 mM Tris-borate and 4 mM EDTA at pH 8.3. What is the molarity of each of the chemicals…
A: Given In 50X TBE 87 mM tris-borate 4 mM EDTA pH 8.3
Q: What is the m/v % concentration of a solution of LiCl with a density of 2.07 g/mL in 40.0 mL of…
A: Given Values: Mass or weight of LiCl = 2.07 grams The volume of the solution = 40 ml The density of…
Q: Give the equation for the complete titration of aspartic acid with a base, NaOH. At what pH, can you…
A: Amino acids contain ionizable groups and can be titrated. Titration if amino acid illustrates the…
Q: Calculate the pH of a mixture of 0.25 M acetic acid and 0.20 M sodium acetate. The pKa of acetic…
A: The Hasselbalch-Henderson equation is used to estimate the pH of a buffer solution. The numerical…
Q: What is the pH of a 0.0032 M solution of NaOH?
A: pH is a scale which is used to specify the acidity or basicity of an aqueous solution. The pH scale…
Q: For a weak acid with a pKa of 6.0, calculate the ratio of conjugate base to acid at a pH of 5.0
A: The Henderson-Hasselbalch equation helps to describe the derivation of pH as a measure of acidity in…
Q: determine the pKa of the acid and ph of the buffer sol'n of a buffer mixed with 0.1 M tris and 0.5 M…
A: Buffer solutions often are weak acid/strong acid and conjugate base. buffers resist the change…
Q: Calculate acetic acid when it requires 44.82mL of a 0.145M NaOH solution to titrate 34.95 mL of our…
A: M1VI=M2V2
Q: What is the functional difference between TAE and TBE buffer?
A: A buffer is a solution capable of withstanding pH changes even when a base or acid solution is…
Q: Define the following: - pH - Buffer - pKa
A: An acid-base reaction takes place between an acid and a base and is used to determine pH. An acid is…
Q: Calculate the fractional charge on ASP at pH 3 using the following pKa values (1. 9.90, 3.90). Write…
A: A total of 300 amino acids are present in the biological system out of the 20 are part of…
Q: You will be given a stock solution of the dye EVANS BLUE dissolved in distilled water whose…
A: Scientists use molarity to describe the concentrations and it tells us how much solute is dissolved…
Q: The solubility product of a metal hydroxide M(OH)2 is 8.65 × 10-6. What is the molar solubility of…
A: Ionic molecules are formed by the loss and gain of electrons to form respective positive and…
Q: Describe the preparation of 2.00 L of 0.100 M glycine buffer, pH 9.0, from glycine and 1.00 M NAOH.…
A: Glycine-Sodium hydroxide buffer is a common buffer which has good buffering capacity. This buffer…
Q: Calculate the protein concentration (in mg/ml) of an unknown sample with an absorbancy value of…
A: Bradford method of protein estimation is quick and simple method of protein estimation using…
Q: Write solubility product constant expression and calculate numerical value (Ksp) of each ionic…
A: AgCl(s) gives Ag+(aq.) + Cl-(aq.) AgCl molecular weight= 143.32 g/mol 5 gm AgCl in 100 ml water…
Q: Calculate the volume of TAE buffer that you will need to prepare a 100ml solution of 1X strength…
A: TAE buffer stands for Tris-acetate-EDTA buffer. It is used in lab to do electrophoresis of nucleic…
Q: Suppose you wanted to make a buffer of exactly pH 7.00 using KH2PO4 and Na2HPO4. If the final…
A: The buffer solution is a solution which resists any change in pH on addition of small amounts of…
Q: Write the Henderson-Hasselbalch equation for a propanoic acid solution (CH,CH,CO,H, pK, = 4.874).…
A:
Q: 2.2 Assuming that the final volume of the solution after the titration is exactly 5 mL, determine…
A: Molarity(M) = [moles of solute(n)]÷[litres of solution (v)] Atomic mass of sulpher= 32+(16×4) =96.…
Q: Calculate the concentration of Y4-ion in 0.0100 M EDTA solution at pH 6. for pH 6, α4 = 2,2 x 10-5
A: Ethylene diamine tetra-acetic acid (EDTA) is an aminopolycarboxylic acid with the formula…
Q: From the Henderson-Hasselbach equation, calculate the ratio of dihydrogen phosphate (H2PO4-) and…
A: The Henderson-Hasselbalch equation can be used to determine the pH of the buffer solution. The pH is…
Q: s the pH of a 0.0001 M solution of hydrochloric
A: [H+]=0.0001=10-4 pH=-log[H]+ pH=4
Q: Consider a buffer solution that contains 0.55 M NH2CH2CO2H and 0.35 M NH2CH2CO2Na.…
A: NOTE: since you have asked multiple question, we will solve the first question for you. if you want…
Q: An aqueous solution contains 0.448 M dimethylamine ((CH3)2NH). How many mL of 0.240 M hydroiodic…
A: Buffer solution contains a mixture of weak acid and its conjugate base or weak base and its…
Q: Calculate the molarity (M) of a 65% (w/v) copper sulfate solution (m.w. = 160.0 g/mol).
A: The molarity of a solution is defined as moles of solute in per litre of solution. To calculate…
Q: Describe the preparation of 2.00 L of 0.100 M glycine buffer, pH 9.0, from glycine and 1.00 M NaOH.…
A: Molar concentration is a measure of the concentration of a chemical species, in particular of a…
Q: Balance the following (fictional) chemical equations by supplying the correct coefficient. Do not…
A: A section of chemistry that deals with the relationship between the reactant and products involved…
Q: calculate the molarity of the oxalic acid standard solution.
A: The reaction of oxalic acid with NaOH can be written as: H2C2O4(aq) + 2 NaOH(aq) → Na2C2O4(aq) + 2…
Q: explain the characteristics of hartman's solution
A: Hartmann’s solution or the Ringer’s lactate solution is a solution of sodium lactate, calcium…
Q: Refer to the following titration curve below: 13 12 11 10 7 5 4 3 2 4 6 10 12 14 16 18 20 22 24 26…
A: Proteins are unbranched polymers constructed from 22 standard α-amino acids. They have four levels…
Q: What is the pH of a buffer prepared by adding 30.0 mL of 0.25 M acetic acid (CH₂COOH) (K. = 1.7 x…
A: The pH of a buffer prepared by adding 30.0 mL of 0.25 M acetic acid to 125.0 mL of 0.15 M sodium…
Q: If 150ml of polyethylene glycol 400 weighs 74.1g, what is the specific gravity?
A: The division of density of the substance and standard density is called specific gravity. It is also…
Q: Given the titration curve of the hypothetical polyprotic acid X at 0.100 M concentration (pKa1=4.0,…
A: The given polyprotic acid has three pKa values that mean it has three ionizable groups.
Q: Three buffers are made by combining a 1M solution of acetic acid and a 1M solution of sodium acetate…
A: Given Values: Ka of acetic acid = 1.7×10-5 The concentration of acetic acid stock solution = 1 M The…
Q: A saline solution contains 1.00 g of NaCl (molar mass = 58.55 g/mol) in 75.8 mL of solution.…
A: Given Values: Weight of the NaCl used to prepare saline solution = 1 gram The total volume in which…
Q: By a stoichiometric calculation, determine the pH of a buffer solution prepared by dissolving 25.5 g…
A: The equation that relates the pH of an aqueous solution of an acid to the acid dissociation constant…
Q: What is the pH of an aqueous solution with {H3O+} = 6x10-12
A: pH is logarithm of the reciprocal of the H+ or H3O+ ion concentration in a solution that is…
Q: If 4 mL of 1 M NaOH is added to 100 mL buffer, would it still be a usable buffer according to the…
A: A buffer can be destroyed by adding either a strong acid or a strong base in a large amount. The…
Q: What information do we get if we calculate the ratio of the Absorbance value at 260 nm to the…
A: A spectrophotometer is a device that is used to calculate the absorbance of light passing through a…
Calculate the cocentrations of acetic acid (pKa = 4.76) and sodium acetate necessary to prepare a 0.2 M buffer solution at pH 5.0.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- Calculate the pH of a mixture of 0.25 M acetic acid and 0.20 M sodium acetate. The pKa of acetic acid is 4.76.How much of a 5x buffer and how much water should be added to make 1 L of a 1x solution?Consider the following pH titration curve of a diprotic acid. What is the approximate values for pka 1 and pka 2? the curve is attached below.
- 439 mL of 0.270 M hydrochloric acid is exactly neutralized with 0.920 M potassium hydroxide solution. What volume of base solution is required?What is the pH of a 0.0001 M solution of hydrochloric acid (HCl)?To make up a solution of phosphate buffered saline (PBS), you need 10 mM Na2HPO4 (anhydrous) (FW: 141.96 g/mol), 3 M NaCl (FW: 58.44 g/mol), and 5mM KH2PO4 (FW: 136.09 g/mol). How many grams of each will you need to make up 850 mL of PBS?
- In order to make a solution of the concentration 0.364 M, what mass of NaCl should bedissolved in 152 mL of water?Draw titration curve for compound X when NaOH equivalence(s) is/are added. Indicate the buffering region(s) with a box.What is the Molarity of 10 grams of NaCl dissolved in 3L of solvent?