During an experiment, a student mixed 14.5 mL of a 0.500 M sodium fluoride solution with 15.6 mL of a 0.750 M hydrofluoric acid solution. The measured pH was 3.24. Calculate the pKa   Calculate the pH of a solution prepared by mixing 20.5 mL of a 0.500 M sodium flouride solution with 32.5 mL of a 0.750 M hydrofluoric acid solution. Use the pKa calculated from question 1.

Q: 10.0 ml of hydrofluoric acid has a concentration of 0.117 M and a Ka of 3.3X10-11. It is titrated…

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Q: Calculate the pH of a buffer solution that contains 0.34M benzoic acid and 0.49 M potassium…

A: Using Henderson equation , we can solve this problem. Here benzoic acid is weak acid and potassium…

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: Which of the fellowing aqueous solutions are good buffer systems? O0.38 M hypochlorous acid + 0.25 M…

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Q: The pKa of hypochlorous acid is 7.530. A 54.0 mL solution of 0.125 M sodium hypochlorite (NaOCI) is…

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Q: A student titrated 28.32 ml of a 0.118 M HCl solution with a NaOH solution of unknown concentration.…

A: The reaction between acid and base to form salt and water is called as Neutralization reaction. In…

Q: Calculate the pH of a solution obtained by mixing 50 mL of 0.1 M acetic acid (weak acid) with 50 mL…

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Q: When titrating a weak acid with a strong base, it is found that the equivalence point happens when…

A: equivalence point of any acid base titration is that point where equal no of moles of both the…

Q: test the pH of a compound NaOH. So they made a solution with some solid NaOH and dissolved it into…

A: pH of solution= 13

Q: 55.00 mL of a solution of 0.1325 M maleic acid is titrated with 0.1000 M NaOH. What Is the pH when…

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Q: Suppose you are asked to prepare a buffer solution for an upcoming experiment using stock solutions…

A: The pH of the buffer solution is to be determined using Henderson-Hasselbalch equation which is…

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

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

A: Given:pH of solution = 3.00Volume of HF solution = 1.00 LConcentration of HF = 1.00 MKa of HF =…

Q: A chemistry graduate student is given 500. mL of a 0.30M chlorous acid (HC102) solution. Chlorous…

A: To solve this problem, we need to use the Henderson-Hasselbalch equation, which relates the pH of a…

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

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Q: Which of the following aqueous solutions are good buffer systems?

A: Buffer solutions:  A solution which resists it's pH by addition of small amount of Strong acid…

Q: An analytical chemist is titrating 110.9 mL of a 1.100M solution of nitrous acid (HNO₂) with a…

A: First we need to calculate moles of both HNO2 and NaOH.  Then we have to draw an ICE table for…

Q: a student titrated 45.0mL of nitric acid solution of unknown concentration with a 0.10mol/l…

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Q: A buffer is made by mixing 40.00 mL of a 0.100 M solution of the fictitious acid HA (pKa = 5.11)…

A: Given,Molarity of fictitious acid, HA = 0.100 M   ( pKa = 5.11 )volume of HA = 40.00 mLMolarity of…

Q: Calculate the pH of the buffer system made up of 0.19 M NH3 and 0.48 M NH₂Cl. The K of NH³ is 1.8 ×…

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Q: b) Mike was asked to prepare an acidic buffer solution. From the raw materials provided, he has…

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Q: The pKa of hypochlorous acid is 7.530. A 55.0 mL solution of 0.137 M sodium hypochlorite (NaOCI) is…

A: We have to calculate the pH for the given titration of HCl and NaOCl

Q: The pKa of hypochlorous acid is 7.530. A 58.0 mL solution of 0.126 M sodium hypochlorite (NaOCI) is…

A: According to the question, we have pka = 7.530 The volume of NaOCl = 58 ml Concentration of the…

Q: A buffer solution is prepared by adding 12.71 g of sodium acetate (NaC2H3O2) and 15.98 g of acetic…

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Q: The pKa of hypochlorous acid is 7.530. A 58.0 mL solution of 0.126 M sodium hypochlorite (NaOCI) is…

A: The balanced equation for the reaction of NaOCl(aq) with HCl is: NaOCl(aq) + HCl(aq) → HOCl(aq) +…

Q: Calculating the pH of a weak acid titrated with a strong base An analytical chemist is titrating…

A: The balanced equation is HCNO + KOH -> KCNO + H2O Number of moles of HCNO = MXV = 1.200 M x…

Q: An analytical chemist is titrating 69.4 mL of a 0.9700M solution of butanoic acid (HC,H,CO,) with a…

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Q: A buffer solution contains 0.424 M KHCO3 and 0.246 M Na2CO3. Determine the pH change when 0.123 mol…

A: pH = pKa + log salt / acid  pH after adding x mole NaOH  pH = pKa + log salt+x / acid-x   ∆ pH = |…

Q: Suppose you are asked to prepare a buffer solution for an upcoming experiment using stock solutions…

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Q: Which of the following aqueous solutions are good buffer systems? O 0.22 M perchloric acid +0.24 M…

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Q: A 349-mL buffer solution is 0.372 M in nitrous acid (HNO2) and 0.346 M in sodium nitrite (NaNO2).…

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Q: A buffer solution contains dissolved C₆H₅NH₂ and C₆H₅NH₃Cl. The initial concentration of C₆H₅NH₂ is…

A: A solution which is a mixture of weak acid and its conjugate base is known as buffer. For…

Q: A buffer solution was prepared by adding 4.92 g of sodium acetate, NaCH3CO2, to 2.50 x 10^2 mL of…

A: The objective of this question is to calculate the pH of a buffer solution after adding a certain…

Q: You are working in a lab and someone has just handed you a beaker filled with 110 ml of a mysterious…

A: pH of a buffer is calculated using Hasselbach Henderson equation: pH =pKa+log([Conjugate…

Q: Lactate is an important component in some intravenous solutions. Given pKa = 3.86 for lactic acid,…

A: pH = pKa  +  log ( [ conjugate base ]/[weak acid] ) ---------(i) pKa = 3.86 ( given) HC3H5O3…

Q: If I have a buffer solution made up of 45.0 mL of 0.500 M sodium acetate (NaCH3COO) and 5.0 mL of…

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Q: 0.336 M CH3NH3Br and 0.344 M CH3NH2 (methylamine). Determine the pH change when 0.078 mol NaOH is…

A: Buffer is prepared by weak acid or weak base with its conjugate base or acid ...

Q: Which of the following aqueous solutions are good buffer systems? O 0.22 M hydroiodic acid + 0.23 M…

A: Buffer solution is solution in which weak acid or weak base present with their conjugate acid or…

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 0.150 M solution of potassium citrate commonly used to treat kidney stone condition called renal…

A: Given that: Concentration of potassium citrate salt [K3C6H5O7], solution,M1 = 0.150 M Volume of salt…

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: An analytical chemist is titrating 102.2 mL of a 0.5200M solution of nitrous acid (HNO,) with a…

A: For HNO2 Volume, V =102.2 mL = 0.1022 L Molarity, M = 0.5200 M = 0.5200 mol L-1   For KOH Volume, V…

Q: A 0.0420 L volume of 0.11 M hypobromous acid (HBrO), a weak acid with Ka = 2.8 ✕ 10−9, is titrated…

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Q: with a 0.2500M solution of NaOH. The p K of butanoic acid is An analytical chemist is titrating…

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Q: Which of the following aqueous solutions are good buffer systems? . 0.34 M nitrous acid + 0.27 M…

A: The good buffer solutions are : (a). 0.34 M nitrous acid + 0.27 M potassium nitrite, Because, HNO2…

Q: A chemist titrates 220.0 mL of a 0.6204 M butanoic acid (HC₂H,CO₂) solution with 0.2746 M KOH…

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Q: When a 28.1 mL sample of a 0.465 M aqueous acetic acid solution is titrated with a 0.419 M aqueous…

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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.