A 30-mL portion of a solution containing Ca2+ and Mg2+ was titrated with 28.19 mL of 0.213 M EDTA at pH 10. Another 30-mL aliquot of the same Ca-Mg mixture was treated with NaOH to make the solution strongly alkaline and precipitate Mg(OH)2. This solution was then titrated with the same EDTA solution. What would be the required EDTA volume (in mL) to reach the endpoint of the second aliquot if it was found that there was 0.061 M of Mg2+ in the sample?

Q: A 5.850-g sample containing KCl and KClO4 was dissolved in sufficient water to give 250.00 mL of…

A: Given , Reaction : 8V3+ (aq) + ClO4- (aq) + 12H2O (l)→Cl- (aq) + 8VO2+ (aq) + 8H3O+ (aq) Volume of…

Q: A buffer was prepared by adding 2.4 g ammonium nitrate to 100.0 mL 0.30 M ammonia (Kb = 1.8 x 10-5…

A: We have 2.4 g of ammonium nitrate , 100 ml of 0.3 M of ammonia, to this we added 10 ml of 0.3 M of…

Q: An acetic acid-sodium acetate buffer is prepared by mixing 6.00 g NaCH3CO2 with 4.00 mL of CH3CO₂H…

A: we have to calculate the pH of the given solution

Q: A buffer solution was prepared by adding 12.0 of CH3COONa in 250 mL of 1.0M CH3COOH. Calculate the…

A: Given Mass of CH3COONa = 12.0 g volume of solution = 250 ml Ka for CH3COOH = 1.7 × 10-5

Q: 25.00 mL of 0.250 M acetic acid (HC₂H30₂) is titrated with 25.00 mL of 0.250 M NaOH. The K₁ for…

A:

Q: Two 25.0-mL solutions of 0.100 M Ba²+ are titrated with 0.100 M EDTA at pH 10. Calculate the value…

A:

Q: A 0.100 M HNO3 solution is used to titrate 50.0 mL of 0.100 M trimethylamine ((CH3)3N, Kb = 7.4 x…

A: The reaction of weak base and nitric acid is: At equivalence point the entire base will be…

Q: Consider the titration of 50. ml of a 0.10 M benzoic acid solution (HC7H5O2 Ka = 6.5 x 10^-5 ) with…

A: Step 1: To begin answering this question, we must first determine the concentration of each species…

Q: Calculate the difference in pH upon the addition of 1.00 mL of 0.100 M NaOH to 1.00 L of formate…

A: The pH of the sodium formate-formic acid buffer system is calculated as,

Q: 10.71

A: Molarity of HCl(M)= 0.050 M Volume of HCl(V) = 25 mL Mmol of HCl =  M × V      = 0.050 × 25 = 1.25…

Q: If you titrate 50 mL of a sample with 0.06 N EDTA and the titration takes 12.4 mL of EDTA to reach…

A: Hard water refers to that water which contains soluble salts of Ca2+ and Mg2+. It is not suitable…

Q: Calculate the pH of the solution that results from the addition of 0.04  moles of HNO3 to a buffer…

A: Solution: To calculate pH of buffer solution we use henderson hasselbalch equation. Since we have…

Q: a 20 mL of EDTA titrant is required to titrate 40 mL of standard 0,25M CaCO3. A 70 mL hard water…

A:

Q: Benzoic acid-sodium benzoate buffer is prepared by mixing 0.4 mol of benzoic acid (Ka = 6.3 x 10-5…

A:

Q: In the titration of 25.00 mL of a water sample, it took 20.690 mL of 4.050x 10−3 M EDTA solution to…

A: Number of moles of EDTA is determined as follows,

Q: A 1.00 L buffer solution is 0.150 M in HC7H5O2 and 0.250 M in LiC7H502. Calculate the pH of the…

A:

Q: A 50.0ml of ocidic solute (K, = 2.6x 102) is titrated with a 25.0 ml of 0.001 M NOOH solution. Which…

A: The correct answer is option (c)  Explanation:-  Since the titration is being carried out with a…

Q: 18mL 0.10MHClO(Ka = 3.5 * 10 ^ 8) was titrated with 0.06 M NaOH. Calculate the pH after the addition…

A: Given data Volume of HClO acid = 18 mL Acid dissociation constant Ka=3.5×10-8 molarity or…

Q: 33) Determine the pH at the equivalence point in the titration of 85.0 mL of a 0.783 M benzoic acid…

A: The objective of the question is to calculate the  at the equivalence point.

Q: A titration curve is shown below. What is the ratio of A to HA (A:HA) at the lower end of this…

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

Q: Calculate buffer capacity of a solution composed from 0.3 M acetic acid (Ka= 1.77 × 10-5) and 0.3 M…

A: Introduction: The buffer capacity is the number of moles of acid or base added to 1 liter of buffer…

Q: A 0.100 M HNO3 solution is used to titrate 50.0 mL of 0.100 M trimethylamine ((CH3)3N, Kb = 7.4 x…

A: Given that, The molarity of HNO3 solution =0.100 M , Molarity of trimethylamine (CH3)3N =0.100 M,…

Q: What is the percentage of NaOH in the sample?

A:

Q: A sample containing 15.00 ml of oxalic acid H 2 C 2 O 4 was titrated with 0.288 M NaOH. When 17.02…

A: Oxalic acid reacts with sodium hydroxide to form sodium oxalate and water. The equation for the…

Q: Calculate the change of pH of a buffer system with a pH of 7.323 if 0.217 mol potassium hydroxide…

A: If 0.217 mole of NaOH was added to the system  pH = 7.323Volume of phosphoric acid  525 mL = 0.525 L…

Q: An analysis was done on 3 unknown samples (NaOH, Na2CO3 and NäHCU3) USIng each analysis and a single…

A: Neutralization reactions of all three possible compounds are: NaOH + HCl ------> NaCl + H2O…

Q: For the titration of 50.00 mL of 0.300 M RbC7H5O2 (WB) with 0.200 M HNO3 (SA). Ka (HC7H5O2) = 6.3 x…

A:

Q: A 25.4mL sample of 0.156 M HCl is titrated with 0.249 M NaOH. Calculate the pH after the addition of…

A:

Q: A 40.0 mL aliquot of a city drinking water was treated with a small amount of an NH3-NH4Cl buffer…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: A plot of pH vs volume of 0.05 M NaOH solution was obtained for titrating 0.4055 g of a dried solid…

A: The plot of pH vs volume of 0.05 M NaOH solution given is as,

Q: When excess solid Mg(OH)₂ is shaken with 1.00 L of 1.2 M NH4Cl solution, the resulting saturated…

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Q: A 1.00 L buffer solution is 0.150 M in HC7H5O2 and 0.250 M in LiC7H5O2. Calculate the pH of the…

A:

Q: a) Calculate the pH after 0.0100 mol of H+ ions are added to 0.100L of buffer containing 1.00M…

A: Note: Since you have posted multiple questions, we will provide the solution only to the first…

Q: 1. 10 M HCI is titrated with 0.0993 M NaOH. [ Select ] 2. 10 M acetic acid (K, = 1.8x105) is…

A: To find suitable indicators for  1) Titration of HCl and NaOH. 2) Titration of CH3COOH and NaOH. 3)…

Q: Consider the titration of 50.0 mL of 0.170 M HA (Ka = 4.2 x 105, pKa = 4.38) with 0.150 M NaOH.…

A: HAOH-H2OA-Initial8.5 x 10-3 mol0 mol-0 molAdd0 mol7.5 x 10-3 mol- Change- 7.5 x 10-3 mol- 7.5 x…

Q: The titration of 25.00 mL of 0.536 M of an unspecified diprotic weak acid (H2A) with 1.00 M…

A: Volume of H2A = 25.00 mLConcentration of H2A = 0.536 MConcentration of KOH =1.00 MKa1 = 1.0 x 10-3…

Q: Given the following buffer systems, the acetate buffer system would be the best choice to create a…

A: Answer: A buffer solution is the type of solution that resist the change in its pH on adding small…

Q: A titration of 0.075M C6 H5 COOH with 10.00 mL  0.0150 M NaOH. The acid dissociation constant of…

A: The question is based on the concept of titration. we are titrating a weak acid benzoic acid with a…

Q: How many microliters of 1.000 M NaOH solution must be added to 25.00 mL of a 0.1000 M solution of…

A: We have to prepare a buffer of lactic acid and sodium hydroxide. pH of the buffer = 3.70 Molarity of…

Q: Part A)   A 75.0-mL volume of 0.200 M NH3 (Kb=1.8×10−5) is titrated with 0.500 M HNO3. Calculate the…

A: Hi, as you have posted 2 questions and have not mentioned which question you want us to solve for…

Q: pH of the buffer after the addition of the NaOH

A: pKa(CH3COOH) = 4.74 Moles = M × V (L)   Moles of Acetic acid =  M × V(L)     = 0.281 × 0.300   =…

Q: A 442.91 mL, 0.975M weak base solution was titrated with a 0.198 M hydrochloric acid. What is the pH…

A: Answer:- This question is answered by using the simple concept of calculation of pH at the…