A compound has an ionisable groups with a pKa of 2.6. A 200 mL volume of a 0.15 M solution of this compound had an initial pH 2.4. The concentration of the conjugate acid in the initial buffer was 0.092 M. The concentration of the conjugate base in the initial buffer was 0.058 M. What is the final pH of the buffer AFTER you added 5 mL of 1 M NaOH?

Q: You are titrating a solution containing 1.50 g of a weak acid, HA. The initial pH of this solution…

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Q: Which of the following BEST describes a buffer solution?     The pH of a buffer is close to the…

A: A buffer solution is generally a mixture of a weak acid and its conjugate base or a weak base and…

Q: An analytical chemist is titrating 149.1 mL of a 0.1500M solution of diethylamine ((C₂H₂)₂NH) with a…

A: Solution of diethylamine and HNO3

Q: Calculating the composition of a buffer of a given pH A chemistry graduate student is given 300. mL…

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Q: The pKa of hypochlorous acid is 7.530. A 59.0 mL solution of 0.133 M sodium hypochlorite (NaOCI) is…

A: Given :- The pka of hypochlorous acid is 7.530. A 59.0 mL solution of 0.133 M sodium hypochlorite…

Q: The bicarbonate/ carbonic acid buffer is of extreme importance to our bodies. The pH of importance…

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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: You want to make a 500.0 mL of 0.080 M of phosphate buffer pH = 7.90 from Na2HPO4 and NaH2PO4…

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Q: Concentration Buffer solution pka Desired ph 0.50 M Phosphate 2.12 2.0 250ml was added to prepare…

A: Buffer Solution : Buffer solutions are the solutions which resist the pH chnage whenlittle amonut of…

Q: Which of the following acids should be used to prepare a buffer with a pH of 3.4? CH3COОН, Ка - 1.8…

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Q: Calculate the pH of a buffer prepared by adding 0.44 moles of acetic acid and 0.25 moles of acetate…

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Q: ou need to prepare 100.0 mL of a pH 4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and…

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Q: A chemistry graduate student is given 250. mL of a 0.70M hydrocyanic acid (HCN) solution.…

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Q: A 1.0-L 0.010 M buffer with pH 6.50 is given as an assignment to a group of students. Which is the…

A: Buffers are the solutions that do not change their pH to large extent when small amount of conc.…

Q: What is the hydronium ion concentration in a buffer solution prepared by mixing 50.00 mL of 0.10 M…

A: Volume of HCN = 50 mLMolarity of HCN = 0.1MMoles of HCN = 0.1 M * 0.05 L = 0.005 molesVolume of NaCN…

Q: A buffer solution was made by mixing equal volumes of 0.20 mol/L solutions of acetic acid and sodium…

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Q: A chemistry graduate student is given 300. mL of a 1.70M trimethylamine ((CH3), N) solution.…

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Q: A buffer consists of 0.150 M acid, HA, and 0.200 M of its conjugate base, A. If HA has a K, of 4.84…

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Q: A chemistry graduate student is given 250.mL of a 0.90M diethylamine ((C_2H_5)_2NH) solution.…

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Q: You need to produce a carbonic (H,CO3)/bicarbonate buffer solution that has a pH of 4.50. You…

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Q: 3-Calculate pH of a buffer solution made from 0.15 M formic acid and 0.12 M sodium formate. The Ka…

A: Formic acid solution is a weak acid. Sodium ion are neutral but formate ion is basic in nature so it…

Q: 1. A sample of a certain monoprotic weak acid was dissolved in water and titrated with 0.125 M NaOH,…

A: Given data: Concentration of NaOH = 0.125 M, Volume of NaOH added = 16.00 mL = 0.016 L, pH after…

Q: A 100.00 mL buffer is prepared by dissolving 1.22 grams benzoic acid (pKa = 4.20, Molar Mass, μ =…

A: Given :  1. Volume of buffer solution (V2) = 100.0 mL  2. Mass of benzoic acid = 1.22 grams  3. Mass…

Q: You find a solution that contains exactly 69 mM of a weak base. Adding the conjugate acid (pKa =…

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Q: low is the assigned buffer prepared? Write your computations and encircle the amount of solute…

A: Solution: Here we have phosphate buffer solution with pKa 2.12. So from this value we can find the…

Q: You need to prepare 100.0 mL of a pH 4.00 buffer solution using 0.100 M benzoic acid (p?a=4.20) and…

A: Let y mL benzoic acid and (100 – y) mL sodium benzoate are mixed. For acidic buffer solution,  pH =…

Q: A buffer can be prepared from a weak acid, HA, and it's conjugate base, A⁻. A 1L solution is…

A: Given data,[HA]=0.2M[A-]=0.1MpKa=7.5Molarity of KOH=1MVolume of KOH=50mL0.05LVolume of buffer=1L

Q: Calculating the composition of a buffer of a given pH A chemistry graduate student is given 500. mL…

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Q: A chemistry graduate student is given 450. mL of a 1.80M methylamine (CH3NH2) solution. Methylamine…

A: Step 1:Solution of weak base methylamine (CH3NH2) and its conjugate base (CH3NH3Br) is a buffer.…

Q: A student was required to prepare 250.0 mL of a cyanoacetic acid/sodium cyanoacetate buffer in which…

A: Given: Volume of buffer = 250.0 mL. Concentration of weak acid available = 0.51 M Concentration of…

Q: 4. Formic acid, HFor, has a K value of 1.8 x 104. You need to prepare 125 mL of a buffer hav- ing a…

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Q: 2.00 L of a buffer is prepared by combining 1000.0 mL of 0.500 M nitrous acid (HNO2 Ka = 7.1 x 10-4)…

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Q: Solutions of sodium acetate and acetic acid are combined in equal volume to produce a buffer.…

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Q: a A chemistry graduate student is given 450. mL of a 1.40M chlorous acid (HCIO2) solution. Chlorous…

A: Given: Vbuffer​=450.mL;[HClO2​]=1.40M;pH=1.94;Ka​=1.1x10−2massNaClO2​=???g;MNaClO2​​=90.44g/molStep…

Q: Carbonate buffers are important in regulating the pH of blood at 7.40. If the carbonic acid…

A: Answer:Buffer solution is a type of solution that resists the change in its pH on adding small…

Q: Which of the following weak acids would be suitable for making a buffer at pH = 3.50? chlorous acid…

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Q: A student made a mistake while preparing an acetic acid/acetate buffer. They intended to prepare…

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Q: Part 1: A buffer system is set up with [HA] = 0.550 M and [A-] = 0.460 M in 1.0 L of aqueous…

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Q: An acid–base buffer is able to resist changes in pH due to the addition of small amounts of strong…

A: Given:-molarity of NaOH=0.209 Mmolarity of CH3COOH=0.231 MTo find:-PH of Buffer solutionsolution:-As…

Q: The pH of a bicarbonate-carbonic acid buffer is 6.18. Calculate the ratio of the concentration of…

A: The ratio of [H2CO3] to that of [HCO3-] is determined by using Henderson-Hasselbalch equation.

Q: a Calculate the pH of a solution that is 0.20 M HOCI and 0.88 M KOCI. Ka = 3.5x10-8 pH = 8.1 b In…

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Q: Chemistry A technician in a hospital laboratory obtained a 5.0 mL sample of gastric juice taken from…

A: Answer: Gastric juice contains HCl acid, therefore this question is based on acid-base titration.

Q: A student wishes to make a buffer that has a pH of 4.65.  The student has HNO2 and NaNO2.  Nitrous…

A: Volume of HNO2 = 100.0 mL = 0.1000 L Molarity of HNO2 = 0.100 M = 0.100 mol/L pH of buffer = 4.25…

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.