How many grams of sodium hydroxide are needed to be added to 595 mL of 0.450 M HA solution to prepare a buffer with a pH of 4.56? Assume the volume does not change with the addition of sodium hydroxide. K a for HA is 5.61E-6. Do not type units with your answer

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

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

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Q: b. When 50.0 mL of 1.10 M HCl is titrated with 0.95 M NaOH, what is the pH after 24.5 mL of NaOH has…

A: b.

Q: What is the pH of 100 mL100 mL of a buffer that is 0.5 M HCNO0.5 M HCNO and 0.5 M CNO−0.5 M CNO−…

A: Given,     Molarity of HCNO=0.5M     Volume of HCNO solution=100mL     Molarity of CNO-…

Q: Suppose you want to make a buffer with a pH of 3.60. Which of the following acid/conjugate base…

A: The pKa value of the acid gives an idea of which conjugate acid-base pair should be chosen for the…

Q: A chemistry graduate student is given 300. mL of a 1.30M diethylamine ((C,H5), NH) solution.…

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Q: Chemistry A 20.55 mL sample of .63 M HCL is titrated with .63 M NaOH. Calculate the pH after the…

A: Neutralisation reaction is reaction where 1 mole of acid react with 1 mole of base to form salt and…

Q: How many grams of dry NH,Cl need to be added to 2.00 L of a 0.800 M solution of ammonia, NH3, to…

A: Given, Concentration of NH3, [NH3] = 0.8 MVolume of solution, V = 2 LpH = 8.64Base dissociation…

Q: Which of the following is a means of creating a buffer of H2CO3/NaHCO3? A) Mixing 10 mL of 1 M HNO,…

A: -> Buffer contain weak acid or weak base with their conjugate base or conjugate acid…

Q: 13. 30 ml of 0.20 M NH,OH & 25 ml of 0.20 HCl are mixed. What is the pH? K = 1.8 X 10% Calculate the…

A: NH4OH is weak base and when it combines with limiting strong acid, HCl then a basic buffer is…

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 resist change in pH when small amount of acid or base is added to it.

Q: What is the pH of a buffer made using 45.0 mL of 0.750 M HC3H5O2 (propanoic acid, Ka = 1.3×10–5) and…

A: Given that: Concentration of HC3H5O2 = 0.750 MConcentration of NaC3H5O2 = 0.700 MVolume of HC3H5O2 =…

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: What is the pH of a buffer that is 0.153 M in a weak acid and 0.227 M in the acid's conjugate base?…

A: Weak Acid concentration = 0.153 M. Conjugate base Concentration = 0.227 M. Ka = 5.7 × 10-4 pKa = -…

Q: How much 5.50 M NaOH must be added to 430.0 mL of a buffer that is 0.0180 M acetic acid and 0.0250 M…

A: When NaOH is added to the buffer solution of acetic acid and sodium acetate, acetic acid will react…

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: How many grams of ammonium sulfate ((NH4)2 SO4) would you need to add to 425 mL of 0.28 M ammonia…

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Q: To a 500 mL of buffer solution consisting of 0.25 M Acetic acid (HAc) and 0.50M Sodium acetate…

A: As per Henderson Hasselbalch equation, pH of a buffer solution = pKa + log [salt] / [acid] Here acid…

Q: What is the pH of a buffer made by combining 45.0 mL of 0.150 M nitrous acid and 20.0 mL of 0.175 M…

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Q: A buffer is made using 100.0 mL of 0.100 M CH;CH,COOH (propanoic acid) and 100.0 mL of 0.100 M…

A: A buffer is an aqueous mixture of a weak acid with its conjugate base or a strong base with its…

Q: 3) A buffer system is made of 0.30M HF (K. = 7.5 x 10“) and 0.25M NaF. a) Calculate the pH of this…

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Q: Explain which of the following solutions would be a better buffer system. Are there any that you…

A: Buffers are the solutions that resists change in the pH upon the addition of small amounts of acid…

Q: You have 250.0 mL of a 0.56 M solution of NaCH3COO.  How many milliliters of a 0.50 M CH3COOH…

A: CH3COOH is a weak acid it does not dissociate completely in aqueous solution. As it is a weak acid…

Q: A chemist needs a buffer with pH 4.15. How many milliliters of pure acetic acid (density = 1.049…

A: The expression of Henderson-Hasselbalch displays that to calculate the pH of any buffer solution,…

Q: A pH buffer is a solution that resists changes in pH when acids or bases are added to it—typically,…

A: We have to prepare 7.00 L of pH = 12.00 buffer.

Q: A chemistry graduate student is given 100. mL of a 0.60M dimethylamine ((CH) NH) solution.…

A: we need to calculate the mass of diethylamine bromide dissolved in the solution to form a buffer

Q: 4. A 25ml of 0.01M NAOH was titrated with 0.01M HCI. Calculate the pH at: a) The start before HCl…

A: When NaOH reacted with HCl, the reaction is as follows:   NaOH + HCl → NaCl + H2O Volume of NaOH =…

Q: 1. A sample of a certain monoprotic weak acid was dissolved in water and titrated with 0.150 M NaOH,…

A: (1) We know that, at equivalence point  No. of moles of acid = No. of moles of base No of millimoles…

Q: Which of the following combinations can be used to make a buffer? (Assume equal volumes are used.)…

A: D is the right option. NaCN + HCN and concentration of one should be more.

Q: What is the pH of a buffer that is 0.185 M in a weak acid and 0.227 M in the acid's conjugate base?…

A: Henderson-Hasselbach equation shows the relationship between pH of a solution, the acid dissociation…

Q: 4. How many moles of NH4C1 must be added to 2.0 L of 0.10 M NH3 to form a buffer whose pH is 9.00?…

A: We have volume as 2L, 0.1 M NH3, pH is 9, Kb as 1.8*10-5. We have to calculate the moles of ammonia…

Q: Formic acid, HFor, has a Ka value of 1.8 x 10^-4. You need to prepare a buffer having a pH of 3.25…

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Q: Calculate the pH of a buffer composed of 0.12 M benzoic acid and 0.20 M sodium benzoate.

A: From the Henderson Hasselbalch equation pH = pKa + log saltacid for benzoic acid ka=6.3 x 10-5…

Q: Hydrofluoric acid has a Ka of 6.6 x 10-4. 40.00 mL of 0.150 M sodium fluoride, NaF, is titrated…

A: HF is a weak acid. Its conjugate base is F-.

Q: 1a) How many moles of CH₃NH₃Cl  need to be added to 200.0 mL of a 0.500 M solution of CH₃NH₂ (Kb for…

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

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: 2. Calculate the pH of the following solutions: а. A buffer solution containing 0.10 M acetic acid…

A: The total volume of the solution = 1 L. [CH3COOH] = 0.10 M [CH3COONa] = 0.10 M

Q: During a titration of HCl and NaOH solution, which chemical substance at the equivalence point…

A: During the titration of HCl (Strong Acid) with NaOH (Strong Base) will produced a water along with…

Q: You have a 250 mL sample of 1.28 M acetic acid (Ka = 1.8 ×10–5). Calculate the pH of after adding…

A: The equation used in the formation of buffer is Henderson Hasselbach equation . pH=pKa +…

Q: 4. Consider a buffer made by adding 0.050 mol NaC2H302 and 0.040 mol HC2H302 to a liter of water. a)…

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Q: 50.0 mL of 0.25 M potassium nitrate with 30.0 mL of 0.25 M nitric acid.  1) Determine if it yields a…

A: Henderson equation:The pH of the buffer solution is calculated by using below formula, it is,

Q: A solution was prepared by dissolving 21.5 g of benzoic acid, HC;H5O2, and 37.7 g of sodium…

A: Given that:  Mass of benzoic acid = 21.5g  Molar mass of benzoic acid = 122g/mol Moles of benzoic…

Q: A chemistry graduate student is given 100. mL of a 0.60M diethylamine ((C,H;), NH) solution.…

A: Given : Kb of (C2H5)2NH = 1.3 X 10-3  Volume of solution = 100 mL = 0.100 L…

Q: 9) A 50.0 mL of a 0.100 M ammonia (NH,) solution is titrated with 0.150 M HCl. The k of ammonia is…

A: Given,

Q: You start with 100.0 mL of 0.20 M CH3COOH in a flask.  The Ka of CH3COOH is 1.8 x 10-5. You add…

A: After adding NaOH we get buffer solution as it form mixture of weak acid and salt of this weak acid…

Q: How many grams of sodium acetate must be added to 0.100L of 0.150 M acetic acid to obtain a buffer…

A: As per our guidelines, we are supposed to answer?️ only one question. Kindly repost other questions…

Q: What is the pH of a buffer that is 0.174 M in a weak acid and 0.207 M in the acid's conjugate base?…

A: Henderson Hasselbalch equation would be used to calculate the pH of buffer solution

Q: Calculate the pH of 1.00 L of the buffer 0.95 M CH,COONA/1.06 M CH,COOH before and after the…

A: a.) To calculate the pH of a buffer solution , we use Henderson-Hasselbalch equation .  b.) When…

Q: How many grams of dry NHạ Cl need to be added to 2.00 L of a 0.100 M solution of ammonia, NHa, to…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: pH buffer is a solution that resists changes in pH when acids or bases are added to it—typically, a…

A: Given data contains, Volume of the solution is 7.00 L. pH of the solution is 12.00. Total…

Types of Polymers on the basis of Method of Preparation