0.2 mL of 1% azide was added to 0.2 mL of 0.5% dye. What is the concentration of the dye now?

Q: A 50.0 mt of basic solute (K, 158 x 10 ) is titrated with a 25.0 ml of 0.100 M HCI solution. Which…

A: Given: Kb of base solute = 1.58 X 10-9  Volume of base solution = 50.0 mL = 0.050 L…

Q: How to prepare a 2.5L of 1.5M buffer with pH=10.5 from CH3NH3Cl and CH3NH2. Show step by step

A: In order to prepare buffer ,you need to find  the volume of both weak base and it's conjugate acid…

Q: A 50.0 mL of basic solute (Kb = 1.58 x 109) is titrated with a 25.0 mL of %3D 0.100 M HCI solution.…

A: Depending upon the PH of the solution,  one can determine which indicator is the best for this acid…

Q: -A 0.2000-g sample containing urea is analyzed by the Kjeldahl method. The ammonia is collected in…

A: Kjeldahl nitrogen determinations are used for a variety of applications  like  food and beverages,…

Q: Calculate the pH after the addition of 60.0 mL of base in the titration of 50 mL of 0.100 M HA using…

A: Given: Vol of base(NaOH) = 60mL Concentration of NaOH = 0.100M vol of HA = 50mL Concentration of HA…

Q: 8. The following titration data was collected in a lab. Based on the results, determine the…

A: Acid base titrations are a good way to determine the unknown concentration of an acid or base. It is…

Q: (e). Brooke titrated 0.1381 grams of methylamine with 22.50 mL of 0.198 M HCl to reach the…

A: Answer:- This question is answered by using the simple concept of stoichiometry which give the…

Q: A student titrates 0.590 g of the monoprotic weak acid potassium hydrogen phthalate (KHP) using…

A: The question is based on the concept of titrations. we are titrating a weak acid KHP with a strong…

Q: In this experiment, you will use phenolphthalein as an indicator. Why is it important to match the…

A: It is important to overlap equivalence point of titration in the region of indicator pH range.

Q: What volume of KOH is needed to reach the second equivalence point during the titration of 75 ml of…

A: Since density of the solutions are not given, thus considering the molal solution to be equivalent…

Q: What is the pH of a buffer solution made with 0.789M benzoic acid with Ka = 6.5 x 10^-5 and 0.659M…

A: Ka = 6.5 × 10-5  So, pKa =  - log (6.5 x 10-5)          = 4.187 By using Henderson Hasselbalch eqn ,…

Q: 3. Why do the glasswares need to be rinsed with 0.1 M HNO3 prior to use?

A: M symbol denote molarity that determines concentration of nitric acid. Acid is a substance that give…

Q: The buffer in this experiment is made of acetic acid HC2H3O2 and sodium acetate NaC2H3O2 (CH3O2- ).…

A:

Q: Which reagent directly reacts with substance to be titrated? Method – bromometry: Br2; I2; KBr;…

A: Titration is a method use to find the concentration of any unknown solution with the help of a…

Q: Consider the titration of 60.0 mL of 0.200 M pyridine with 0.400 M HCl. What is the pH at 0.00 mL,…

A: Value of pH is used to measure the acidity or basicity of a solution. At room temperature, value of…

Q: Which one of the following indicators would be best to use when titrating 0.1M morphine (Kb = 1.6 ×…

A: pH is a measure of hydrogen ion concentration in solution and it measures acidity or alkalinity of a…

Q: What precipitate is formed when you add HCl to an extraction of NaOH?

A: Here extraction of NaOH means the salt of RCOONa The general reaction is,

Q: A titration experiment required 12.50 ml of standard hydrochloric acid solution to reach the…

A: Volume of HCl required for phenolphthalein endpoint = 12.5 mL Volume of HCl required for methyl…

Q: 8. Calculate the volume of 1.0M acetic acid and 1.0M sodium acetate solution needed to make 250 mL…

A: Given that, Molarity (concentration) of acetic acid = 1.0 M Molarity of sodium acetate = 1.0 M…

Q: 2.) 1.) iPrMgBr но 2.) H*/H2O

A: In first step cyclohexene is converted into cyclohexane epoxide . Then it opens by using Grgnard…

Q: Calculate the pH of the NH3/NH4+ buffer after the addition of the HCl. How does it compare to the…

A: The given  NH3/NH4+ buffer is a basic buffer and its pOH is determined using the…

Q: What volume of 0.100M acetic acid and 0.100M sodium acetate would be required to produce 1.00 L of…

A: The ratio of concentrations of sodium acetate to acetic acid is equal to the ratio of number of…

Q: What is the ratio of acetate ion to acetic acid (Ka = 1.76×10–5) in a solution containing these…

A:

Q: Question attached

A: In a sample of water, there are many ions like calcium, magnesium and aluminium is present. Many of…

Q: A 15.00 ml aliquot of a 0.155 mol L1 3-methylbutanoic acid solution was titrated with a 0.198 mol L…

A: The balanced equation for the reaction between 3-methyl butanoic acid and NaOH is  where one mole…

Q: If 12.35 ml of 0.4967N NaOH were required in the titration after the ammonia from the sample had…

A: Normality of NaOH = 0.4967 NNormality of NaOH = Molarity of NaOH = 0.4967 MVolume of NaOH required =…

Q: A 250 mL sample of saturated AgOH solution was titrated with HCl, and the endpoint was reached after…

A: Solubility product of a sparingly soluble salt is the product of the concentration of the ions…

Q: 2. Why is it important that the color change occurs by the addition 8f a single ulUp! its effect on…

A: In the question 3 we have to tell that why erlenmeyer flask preferred over beaker while performing…

Q: A 0.200-g sample containing urea (FM 60.05) is analyzed by the Kjeldahl method. The ammonia is…

A: Given, mass of sample containing urea = 0.200 g = 200 mg            molar mass of urea = 60.05 g/mol…

Q: McKenzie titrated 150.00 mL of 0.20 M trimethylamine with 0.50 M HCIO4. What is the pH of the…

A: Concept based on the calculation of pH of the base solution.

Q: find the amovnt of buffers and water needed to made 100 mL of 3x buffer of this buffer 1 x bUTfer…

A: Concentration of stock = M1 Volume of stock solution needed = V1 Concentration of diluted 3X buffer…

Q: Calculate the pH of the NH3/NH4Cl buffer after the addition of NaOH. How does it compare to the…

A: The pH of a basic buffer solution is determined using the Henderson-Hasselbalch equation - pOH =…

Q: i. The graph indicates the pH change during the titration of 20.0 cm³ of 0.100 mol dm-* of CH»COOH…

A: When weak acid like CH3COOH is titrated with strong base there will be formation of salt i.e.…

Q: 14. Describe the preparation of a 250.00 mL of 0.300 M acetate buffer, pH 5.00 from 0.300 M sodium…

A: Buffer is defined as the system of chemicals i.e. weak acid and it's conjugate base or weak base and…

Q: solution (in water) and 0.2M Tris-HCl, pH=8.00. For this part, the concentration of PNPP will remain…

A:

Q: What is the difference between 1X and 5X buffer solution that have the same recipe?

A: The strength of a stock solution is expressed with the symbol X. This notation is more beneficial to…

Q: The titration curve from the reaction of a strong base with a weak acid is shown below. Recalling…

A:

Q: A 50.0 mL of acidic solute (Ka = 2.6 x 10-2) is titrated with a 25.0 mL of 0.001 M NaOH solution.…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Derive a curve for the titration of 50.00 ml 0.1000 M solution of compound A with a 0.2000 M…

A: Answer - According to the question - Given -  Calculate the pH after the addition of the following…

Q: What is a 3 point pH calibration in Titration? How is it useful?

A:

Q: Titration You are titrating 10 mL 0.050 M benzoic acid (pK. = 4.19) with 0.025 Msodium hydroxide.…

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

Q: Analytic chemistry. How to test the Na+ in the original solution? and NH4+?

A: In order to analyse the given unknown salt, generally sodium and ammonium salts are used as…

Q: What is the importance of having a titration of about pH 10 in compleximetric titration?

A: In complexometric titration end point is observed by the formation coloured complex.

Q: To carry out your work in the laboratory you need 150 ml of TBE buffer. How Is the solution prepared…

A: In a solution, the amount of solute present in the solution is described with reference to the…

Q: Given that the Ka for acetic acid is 1.8 x 10-5.  What is the pH of a buffer solution made from 0.20…

A:

Q: Construct a curve for the titration of 50.00 mL of a 0.1000 M solution of Ethylenediamine with…

A: The titration of ethylenediamine, which will abbreviate as en, with HCl is an example of a weak…

Q: calculate the pH after addition of 0.00, 5.00, 15.00, 25.00, 40.00, 45.00, 49.00, 50.00, 51.00,…

A:

Q: During Experiment 2, what component of the prepared buffer solution reacted during the addition of…

A:

Q: Why is bromophenol blue and not phenolphthalein used as an indicator for the antacid titration?

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 9. A buffer solution was prepared by dissolving 0.15 mol of sodium ethanoate in 1 dm³ of 0.10 mol…

A: Buffer solution are solution which can resist the change in pH of the solution when acid and Base…