How many grams of sodium acetate, NaC2H302, would have to be added to 1.0 L of 0.85 M acetic acid (pKa = 4.74) to make the solution a buffer for pH 4.00? g NaC2H302 Use correct number of significant digits;

Q: You are asked to prepare a buffer solution with pH = 3.00 starting from 1.25 L of 1.00 M…

A: Given: Ka of HF acid is=3.5×10-4. To find: mass of sodium fluoride. Solution: As we know that, there…

Q: Chemistry If you prepare a 500 mL phosphate buffer solution using 3.00g Disodium Phosphate Dihydrate…

A: Given :  Volume of buffer solution = 500 ml  Mass of Disodium Phosphate Dihydrate = 3.00 gm  Mass of…

Q: "he following graph was generated during the titration of a weak acid with NaOH. 14 12 10 6. 25 50…

A: The above graph is of titration of weak acid with strong base. In this following reaction takes…

Q: An environmental chemist needs a carbonate buffer of pH 10.00 to study the effects of the acid rain…

A: Answer - Henderson - Hasselbach equation - According to Henderson-Hasselbach equation, when the…

Q: What is the pKa of a 0.2M solution of an unknown monoprotic acid that has a pH of 4.2?

A: We have find out Pka of solution of an unknown monoprotic acid that has a pH of 4.2

Q: The Ka of hyperchlorous acid, HClO is 3.50 X 10-8. How many grams of NaClO (molar mass = 74.5…

A: Given, Ka of hyperchlorous acid is 3.50 X 10-8 Therefore, pKa = - log(Ka)…

Q: An analytical chemist is titrating  109.0mL of a 0.4900M solution of hydrazoic acid HN3 with a…

A:

Q: Consider the buffer system of ammonia, NH3 and ammonium ion NH4+ (Ka= 5.6 x10^-10)  a) what is the…

A: Value of pH of a solution is used to measure the acidity or basicity of a solution. At room…

Q: What is the pH of a buffer solution that contains 0.25 M HPO42 ar 0.50 M H2PO4? Round your final…

A:

Q: A buffer consisting of lactic acid and sodium lactate has the pH = 4.30. Given that the…

A: Consider the given information is as follows;            Concentration of lactic acid = 0.12 M…

Q: What is the pH of a buffer system that contains 0.200 M hydrocyanic acid (HCN) and 0.150 M sodium…

A: Given : Concentration of hydrogen cyanide (HCN) = 0.200 M              Concentration of sodium…

Q: To mimic a blood buffer, a scientist prepared 1.00 L buffer containing 0.0025 mol carbonic  acid,…

A: Given Ka = 4.3*10-7 concentration of H2CO3 = 0.0025 Concentration of HCO3- = 0.025

Q: calculate the pH of a solution that is made when 0.10 L of 0.24 M benzoic acid (pKa=4.19) and 3.00 g…

A: Molarity of sodium benzoate can be calculated as follows:

Q: What is the pH a buffer solution containing 0.35 M acetic acid and 0.39 M sodium acetate where the…

A: The given buffer solution is a mixture of weak acid acetic acid and its salt  sodium acetate. The pH…

Q: What is the pH of a buffer prepared by combining 0.36 moles of a weak acid, HA, with 0.69 moles of…

A:

Q: Assume that 32.0 mL of a 0.10 M solution of a weak base B that accepts one proton is titrated with a…

A: Acid and base react with each other to form salt and water. The nature of salt depends on the nature…

Q: grams

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Q: Cacodylic acid (dimethylarsinic acid, HAsO2(CH3)2) is a common buffer used in biology to prepare and…

A: The pH of a buffer solution can be calculated by using Handerson equation.  The given example of an…

Q: Lactic acid is a weak organic acid and present in both sour milk and buttermilk. It is also a…

A: Given: The number of moles of lactic acid, (C3H6O3)=1 mole. The number of moles of  sodium lactate,…

Q: What is the pH of a solution

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Q: A chemistry graduate student is given 250. mL of a 0.50M trimethylamine ((CH N solution.…

A: Given: Concentration of trimethylamine = 0.50M Volume of trimethylamine = 250 mL = 0.250 L Kb = 7.4…

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: The pKa of lactic acid is 3.86. You have a mixture of lactic acid and sodium lactate, where the…

A:

Q: 3.28 g of sodium acetate (82 g/mol) added to 400 mL of acetic acid to produce a buffer solution that…

A: Given 3.28 g of sodium acetate added to 400 ml of acetic acid to make buffer of pH =5 and pKa of…

Q: In titrating 10 ml of 0.1N HA (pKa=4),the pH after the addition NaOH is O 2.32 3.25 O 3.61 4.50 4.36

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

Q: Calculate the pH of a solution that is made when 0.10 L of  0.24 M  benzoic acid (pKa = 4.19)  and…

A: Mass of sodium benzoate = 3.00 g Molar mass of sodium benzoate = 144.11 g/mol Moles =…

Q: A student dissolves 0.0100 mol of an unknown weak base in 100.0 mL of water and titrates the…

A: Given: moles of weak base = 0.010 mol concentration of HNO3 = 0.100 M Volume of HNO3 = 40.0 mL pH =…

Q: a) How many grams of sodium acetate, NACH3COO (molar mass: 82.0343 g/mol) should be combined with…

A: The answer to the following question is-

Q: What is the pH value of a buffer prepared by adding 10 mL of 0.1 M acetic acid to 20 mL of 0.1 M…

A: Given: Volume of acetic acid=10mL Molarity of acetic acid=0.1M Volume of sodium acetate=20mL…

Q: 3. (6)What is the pH of a buffer that is 0.12M lactic acid (HC3H5O3) and 0.1OM sodium lactate? Ka=…

A:

Q: 4. You need to make a buffer with pH as close to 10.00 as possible. Two sets of weak acids and…

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

Q: How much sodium formate (HCOONA, 68.0069 g/mol) do you need to add to 400. ml of 1.00 M formic acid,…

A: Molarity of formic acid = 1.00 M pH of buffer = 3.500 Volume of buffer = 400 mL = 400 × 10-3 L Ka =…

Q: a. What is the pH of a buffer solution that is 0.14 M NH3 and 0.14 M NH4+?  Kb for NH3 is 1.8x10^-5.…

A: Henderson-Hasselbalch equation Equation which is used to find out the pH of a buffer system is known…

Q: what is the pH of a buffer that is 0.260 M in a weak acid and 0.250M in the acids conjugate base?…

A: Given Buffer of 0.260 M in a weak acid and 0.250M in the acids conjugate base with pKa for the acid…

Q: a)  What is the pH of a buffer prepared by adding 0.506 mol of the weak acid HA to 0.507 mol of NaA…

A: the solution is as follows:

Q: A student titrates an unknown weak acid, HA, to a pale pink phenolphthalein end point with 25.0 mL…

A:

Q: a Accessibility Mode a. In a hospital laboratory, a 10.0 mL sample of gastricjuice obtained several…

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

Q: An analytical chemist is titrating 100.0mL of a 0.3300M solution of hydrazoic acid (HNg) with a…

A:

Q: As an FDA physiologist, you need 0.250 L of formic acid (HCOOH)–formate (HCOO-) buffer. The pKa of…

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 prepared by adding 0.506 mol of the weak acid HA to 0.507 mol of NaA in…

A:

Q: What is the pH of a buffer made by combining 45.0 mL of 0.34 M nitrous acid and 60.0 mL of 0.48 M…

A: Answer

Q: What is the pH at 25°C of a solution that results from mixing equal volumes of a 0.0500 M solution…

A: The pH of a solution is related to the acid dissociation constant by the Henderson-Hasselbalch…

Q: Prepare 1.0 L of 0.1 M citrate buffer, pH 4.95, from crystalline citric acid (FW 210) and 1.0 M…

A: Given: Volume of citrate buffer to be prepared =  1L Molarity of citrate buffer = 0.1 M

Q: What is the pKa of an acid if a buffer made from 0.045 mol of the acid and 0.060 mol of its…

A: The pH is used to determine the acidity or basicity of a solution. The pH of a solution is the…

Q: You have 150 mL of 1 M ammonia solution (pKa=9.25). What volume of 1 M hydrochloric acid is needed…

A: pKa=9.25-log(Ka)=9.25Ka=5.62×10-10pH=-logH+=9.5H+=3.16×10-10

Q: the pH of an acetate buffer prepared by dissolving sodium acetate (5.21 g) and acetic acid (2.19 g)

A:

Q: A buffer solution is composed of 1.324 g of KH2PO4 and 4.362 g of NazHPO4. (K, for dihydrogen…

A: Given the mass of KH2PO4 = 1.324 g Molar mass of KH2PO4 = 136.086 g/mol  Moles of KH2PO4  = 1.324 g…

Q: Consider the buffer system of ammonia, NH3 and ammonium ion NH4+ (Ka= 5.6 x10^-10)  a) what is the…

A: Solution -

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.