Which one of the following indicators is best suited for titrating 0.05 M pyridine (pKb = 8.82) with 0.05 M HCl?   A.  Alizarin yellow, pKa = 11.2   B.  Methyl red, pKa = 5.0   C.  Bromocresol purple, pKa = 6.3   D.  Phenol red, pKa = 7.9

Q: 2). What is the pH of 0.250L of a buffer that is 0.0200M boric acid H3BO3 and 0.250M sodium borate?…

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Q: For the buffer solution of weak acid HA and its conjugate base salt NaA, There are two equilibrium…

A:

Q: molar solubility

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Q: Which indicator would be the best to use for a titration between 0.30 M (CH3)2NH with 0.30 M HI? You…

A: An indicator gives the information about the equivalence point in an acid base titration by changing…

Q: Which one of the following indicators is best suited for titrating 0.40 M ammonia (pKb = 4.74) with…

A: The chemical reaction occurs in the given titration (strong acid+weak base) is: NH3 + HCl = NH4Cl…

Q: What volume of 1.35 MHCI must be added to 0.287 L of 0.323 Mdimethylamine to produce a buffer with a…

A:

Q: Calculate the pH of 1.00 L of a buffer that contains 0.110 M HNO2 and 0.185 M NaNO2. What is the…

A: A buffer is a solution which resist any change in pH on adding a small amount of acid or base . it…

Q: a weak species is titrated with a strong acid or base. was the species a weak acid or a weak base…

A: This question is based on titration curve.

Q: The concentration of [Ag+] during the titration 50ml of 0.1M NaCl with 0.2M AGNO3 after addition of…

A: AgNO3  → Ag+ + NO3-                     0            0          I                      X           X…

Q: A mixture contains initially benzoic acid C6H5CO2(weak acid), Ka = 6.28 x 10^-5, and its…

A: Given data :  Ka of benzoic acid = 6.28 x 10^-5 , concentration of benzoic acid = 0.250 M…

Q: What volume of 1.35 M HCI must be added to 0.264 L of 0.213 M dimethylamine to produce a buffer with…

A: We are asked to find the volume of 1.35 M HCl that must be added to 0.264 L of 0.213 M dimethylamine…

Q: en Kb= 1.8x10^-5.

A: Weak acid is: HA say Conjugate base be: A- Consider dissociation of HA :

Q: A chemistry graduate student is given 100. mL of a 1.10M benzoic acid (HC6H5CO₂) solution. Benzoic…

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Q: 1. a) The graph shown on the right shows the titration curves of a 14 1 M solution of a weak acid…

A: Titration curve of weak acid and strong base is used for the determination of the strength of weak…

Q: What is the pH of a buffer that is 0.398 M HF and 0.133 M LiF? The K, for HF is 3.5 x 10.4. Your…

A: Given-  Concentration of Acid HF=0.398M Concentration of Salt LiF= 0.133M

Q: Calculate the pH of a buffer that contains 1 x 10-3 M acetic acid (CH3COOH) and 1 x 10-4 M sodium…

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Q: A student wants to prepare a 400 mL of 1.00 M buffer with a pH of 3.2. Which of the following…

A: A buffer is a solution which resist change in pH and obtained when a weak acid and the salt of its…

Q: How many grams of solid sodium hypochlorite should be added to 1.50 L of a 0.185 M hypochlorous acid…

A: The given problem can be solved by using Henderson-Hasselbalch equation as; pH = pKa + log conjugate…

Q: How many grams of solid potassium nitrite should be added to 1.00 L of a 0.262 M nitrous acid…

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

Q: Which of the gollowing would increase the solubility of PbCO3(s) (Ksp = 1.5x10^-13)? a. add Na2CO3…

A: PbCO3 is a sparingly soluble salt. It dissociates as: PbCO3⇋Pb2++CO32-…

Q: 1. Calculate the pH at different points as 25.0 mL of 0.20 M nitrous acid is titrated with 0.15 M…

A: Since you have asked a question with multiple subparts, we will solve first three subparts for you.…

Q: What is the maximum concentration of Ag+ that can be added to a 0.00250 M solution of Na2CO3 before…

A: The solubility product (Ksp) constant is the equilibrium constant for the dissolution of a solid…

Q: 2. 100.0 mL of a 0.0875 M weak base solution is titrated with 0.250 M HCI. The pH after the addition…

A: Given,  Concentration of weak base (say B) = 0.0875 M  Volume of B in mL = 100.0 mL  Concentration…

Q: What is the maximum concentration of Ag+ that can be added to a 0.00110 M solution of Na₂CO3 before…

A: The question is based on the concept of solubility product principle.  It that states that when a…

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: Calculate the pH of 1.0 L of a buffer that is 0.130 M  HNO2 and 0.170 M  NaNO2. What is the pH of…

A: Given   The volume of buffer is 1.0 L. The molarity of HNO2 is 0.130 M. The molarity of NaNO2 is…

Q: Consider the titration of 500 mL of 100 mM boric acid. The pka of boric acid is 9.23. What will the…

A: Boric acid formula is  which react with sodium hydroxide to form .Reaction is

Q: Which of the following compounds is BEST to construct a buffer at pH 8.00? Аcetic acid (pKа %3D…

A: Answer Buffer :- weak acid and its conjugate base makes the buffer…

Q: Which of the following combinations would make a buffer closest to pH 5.0?

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Q: What volume of 0.50 M HNO3 should be added to 200. mL of 0.25 M NH3 in order to create a buffer with…

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Q: 1. 20.0 ml of 0.500 M Acetic Acid (CH3COOH) is titrated with 0.500 M KOH. Find the pH a. Before…

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Q: In this activity you are asked to draw a titration curve. Use a squared paper and draw the curve…

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Q: You have a 0.500L buffer with [HCIO] = 0.184 M and [NaClO] = 0.541 M. What is the pH after the…

A: Volume=0.500L  [HClO]=0.184M [NaClO]=0.541M  Moles of HCl =0.024 mol pKa = 7.54

Q: How many grams of solid potassium hypochlorite should be added to 1.50 L of a 0.0598 M hypochlorous…

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Q: Mercury thiocyanate - Hg(SCN)2 - is slightly soluble in water.  Its Ksp is 2.8 x 10-20. In the…

A: Upon dilution, the number of moles in the solution remains constant whether the change in the…

Q: How many grams of solid potassium nitrite should be added to 1.00 L of a 0.221 M nitrous acid…

A: Using Henderson hasselbalch equation, we have:    For acidic buffer:    pH = pKa + log[salt]/[acid]

Q: What is the ph of a buffer composed of 1.00M NH4 and 0.50M NH4Cl? Kb=1.85x10^-5

A: The base ionization constant for acid is 1.85×10 -5.

Q: A 20.0 mL sample of 0.150 M ethylamine is titrated with 0.0981 M HCl.What is the pH after the…

A: The volume of 1 L is equal to 1000 mL. The number of mole (n) of ethylamine is calculated as shown…

Q: what is the ph of a buffer that consists of 0.86 m HBrO (ka= 2.29 x 10-9) and 0.41 M KBr

A: The pH of a buffer solution can be determined using Handerson Hasselbach equation that suggests the…

Q: What is the pOH of a buffer that consists of 0.275 M methylamine CH3NH2 and 0.461 M methylammonium…

A: Concentration of methylamine [CH3NH2 ] = 0.275 M Concentration of methylammonium chloride [CH3NH3Cl…

Q: How many grams of solid sodium nitrite should be added to 1.50 L of a 0.0963 M nitrous acid solution…

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

Q: Find the pH of a buffer that consists of 0.50 Mmethylamine(CH₃NH₂) and 0.60 M CH₃NH₃Cl (pK(b) of…

A: The pH of the buffer is calculated using the Henderson-Hasselbalch equation. Buffer is any solution…

Q: Which one of the following conditions is always true for a titration of a weak acid with a strong…

A: Weak acid is acid that give less hydrogen  ion concentratuon in solution  and strong  base is the…

Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for