A 350 Ml BUFFER SOLUTION WAS PREPARED BY A CHEMIST BY MIXING A 0.135 m ch3cooH AND 0.100 m cHcooK. ACCIDENTALLY, you added 12 mL of an unlabeled solution to the buffer solution during the experiment. your groupmate, later on, identified this to be 1.5 M HCL whcih was mistakenly left unlabeled when she went out to urinate. compute the following: use the pKb value of 7.62   1. what is the number of moles of HCL contanied in the 12 Ml solution added? 2. what is the number of moles of CH3COOH whcih participated in the reaction upon adding 12 ml of 1.5 M HcL? 3. what is the number of moles of CH3COOk which participated in the reaction upon adding 12 Ml of 1.5 M hcl? 4. what is the pH of the original buffer solution?  5. what is the ph of the final buffer solution  6. what is the change in pH in percentage

Q: You are asked to prepare a buffer solution with pH 5.10. If you start with a solution containing…

A: Answer: Part A) 22.6 mmol CH3COONa                 Part B) 151 ml

Q: Consider a buffer solution that is prepared with 40.00 ml of 0.300 M ammonia (NH3) and 40.00 ml of a…

A: We are given a buffer solution with NH4+(aq) as the acidic part and NH3(aq) as the basic part of the…

Q: A 117.0 mL sample of 0.100 A methylamine (CH₂NH₂; K-3.7 x 10-) is strated with 0.205 M HNOS.…

A: The objective of the question is to calculate the

Q: Stock solution of NaCl is 0.8 M and KCl is 0.5M in concentration. Buffer Bhas 150 mM NaCl and 200 mM…

A: We need to use the dilution formula, M1V1 =M2V2 M1 is the molarity of solute in the stock solution…

Q: I need help with this example problem. I know the answer, I just don't know who to get to the answer

A: Approach to solving the question:Please see attached photos for detailed solutions. Thank you.…

Q: An automatic titration of Cola product was analyzed and the following results were produced: Volume…

A: In acid base titration, the volume acid must be equivalent to the volume of base in order to reach…

Q: Describe, quantitatively, how you would make 250 mL of a 40 mM HEPES buffer at pH 7.60. You have…

A: Introduction: A buffer solution is a solution in which small addition of strong acid or base does…

Q: Calculate the pH of 1.00 L of the buffer Part 1 of 3 Note: Reference the pK of acids at 25 °C table…

A:

Q: How many grams of dry NH4Cl need to be added to 2.0 L of a 0.300 mol L-1 solution of ammonia, NH3,…

A:

Q: LAD G2 (9g 2 of 5) What % of vinegar is really HC:H3O?? What is the K. of acetic acid? 3. The graph…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: How many grams of sodium fluoride should be added to 40.0 mL of 0.223 M hydrofluoric acid solution…

A: A solution containing a weak acid or a weak base along with it's conjugate base or conjugate acid is…

Q: 1.10 M Acetic acid 0.900 M Sodium acetate [H30*1 (M) Solution (mL) |(mL) 1 8.00 2.00 8.71e-5M 7.00…

A: Here we have to determine [H3O+] concentration in mixing the following volumes of 1.10M acetic acid…

Q: A 1.0-LL buffer solution initially contains 0.30 molmol of NH3NH3 (Kb=1.76×10−5)(Kb=1.76×10−5) and…

A:

Q: A potential problem. You wish to make a buffer with pH 7.0.pH 7.0. You combine 0.060 grams of acetic…

A: Given: The mass of acetic acid and sodium acetate added to 1 L of water is 0.060 g and 14.59 g,…

Q: Suppose there is 1.00 L of an aqueous buffer containing 60.0 mmol of benzoic acid (p?a=4.20) and…

A:

Q: You are making a potassium phosphate buffer that has 50 mM total phosphate (weighed out as KH2PO4),…

A: Given  concentration of KH2PO4 = 50 mM concentration of stock KH2PO4= 2M = 2000 mM volume = 377 mL

Q: What mass of sodium benzoate should be added to 160.0 mL of a 0.16 M benzoic acid solution in order…

A: We have given that pH = 4.3 pKa of benzoic acid = 4.2 Concentration of benzoic acid = [Benzoic…

Q: Mixing 10 mL 1 M NH4Cl with 10 mL 1 M NH3 Why is this an effective buffer? Please provide the…

A: Buffer is the one which can be formed by the weak acid and its conjugate base or weak base and its…

Q: Suppose you want to make 500 mL of a 0.20 M Tris buffer at pH 8.0. On the shelf in your lab, you see…

A: According  to the question we have, The pKa of tris is given by = 8.06 The molar concentration of…

Q: Why do buffers have to be made using weak acids and their conjugate bases (or vice versa) as opposed…

A: The objective of the question is to understand why buffers are made using weak acids and their…

Q: Be sure to answer all parts. What is the [H3O+] and the pH of a benzoic acid-benzoate buffer that…

A: Thank you.

Q: A 0.500-gram sample of a weak, nonvolatile monoprotic acid, HA, was dissolved in sufficient water to…

A: The molar mass of HA would not be affected by this procedure. Rinsing the buret with distilled water…

Q: Can someone show me the steps for solving this problem? I have no idea what to do when HCl is added.…

A: The Henderson Hasselbalch equation for basic buffer is given as:

Q: Calculate the ApH of 20.00 mL of a buffer containing 0.36 M HC2H3O2 and 0.46 M C2H3O2 when 5.00 mL…

A:

Q: You need to prepare an acetate buffer of pH 5.42 from a 0.774 M acetic acid solution and a 2.96 M…

A:

Q: A buffer is composed of 0.200 M HC2H3O2 (Ka = 1.8 × 10–5) and 0.250 M NaC2H3O2. What is the pH of…

A: Molarity of HC2H3O2 = 0.200 M Molarity of NaC2H3O2 = 0.250 M Ka of HC2H3O2 = 1.8 × 10-5 Moles of KOH…

Q: 10.) 0.085 g of an unknown diprotic acid is titrated with 0.115 M NaOH. The first equivalence point…

A: Since the total volume of NaOH solution required to reach 2nd equivalence point is given by = 18 mL…

Q: Buffer A contains 100 mM NaCl and 250 mM Mg Cl2. The stockconcentration of NaCl is 1M and MgCl2 is…

A: Given: Concentration of NaCl in buffer A = 100 mM = 100 x 10-3 M  Concentration of MgCl2 in buffer A…

Q: c) A student titrated 50.0 mL of a 0.10 M solution of a certain weak acid with NaOH. The results are…

A: Identify a pH value between 2.5 and 7.5 at which the concentration of the weak acid being titrated…

Q: A student needs to prepare a buffer solution with a pH of 4.67. Assuming a pkg of 4.69, how many ml…

A: According to Henderson Hasselbalch equation, the pH of a buffer is given by, pH = pKa + log Volume…

Q: You are working in a lab that studies the psychedelic prodrug, psilocybin. You need to make 1.0…

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

Q: You need to prepare an acetate buffer of pH 5.41 from a 0.653 M acetic acid solution and a 2.22 M…

A:

Q: A buffer contains 0.175 moles C2H5NH3NO3 and 0.225 moles C2H5NH2 in 800.0 mL water. Kb (C2H5NH2) =…

A: Calculation of pKb: pKb=-log Kb=-log 4.3×10-4=3.37 Calculation of initial pOH:…

Q: Starting with 20.0 mL of 0.126 M C6H5CO₂H (pK₂ = 4.19) and using 0.063 M NaOH as a titrant,…

A: Concentration of C6H5COOH (aq.) = 0.126 (M), Volume = 20 mL = 0.02 L Concentration of NaOH (aq.) =…

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.