To determine the end point of titration should be used The indicator have a.....  Select the correct answer: a. pKa value near the pH of the titration's endpoint. b. pKa value higher than the PH of the titration's endpoint. c. pKa value less than the PH of the titration's endpoint.

Q: titration curve in acid-base titration is all acid-base indicator are suitable for use .a weak acid…

A: The question is based on the concept of titrations. we have to identify the correct statement…

Q: A student performs this experiment but forgets to remove air bubbles from the NaOH buret valve. (a)…

A: The percentage of calcium carbonate (CaCO3) in a sample is calculated using the back titration…

Q: To prepare the buffer, a total volume of 500 mL is required. The stock solution of the weak base is…

A:

Q: you will use the pH indicator, phenolphthalein in this lab. What color is phenolphthalein in a…

A: To explain: The colour of phenolphthalein indicator.

Q: If the equivalence point of titration is overshot, how will this affect the calculated concentration…

A: Equivalence point occurs when the Titrant and Titrand are exactly neutralized. At this time ,…

Q: In the experiment "Preparation and Standardization of a Sodium Hydroxide Solution", why was the…

A: Titration is the technique in which the concentration of an unknown substance. The concentration of…

Q: When do we need to perform a double-indicator titration procedure?

A:

Q: In general, why should titrants be strong acids or bases? A) For a broader end point B For a sharper…

A: Answer - The correct option is (d) For a sharper end point  The equivalence point or stoichiometric…

Q: How to calculate the second endpoint of a double endpoint titration of you found the first endpoint

A: As we find first end points. This means- We know the initial volume of acid and base (recorded at…

Q: To prepare the buffer, a total volume of 300 mL is required. The stock solution of the weak base is…

A: In the given question we have to calculate the required concentration of weak base to prepare a…

Q: Is the use of an indicator to determine a concentration using titration as good as using a pH meter?…

A: pH indicators are chemical compounds which show the change in color at the equivalence point on…

Q: Suppose a back titration occurs that consists of 1.895grams of CaCO3 antacid (assume no buffer). The…

A: Introduction: As per the international system of unit (SI), mole is the unit of measurement for the…

Q: The end point for a titration can be determined graphically. The end point volume for a first…

A: A neutralization reaction takes place between an acid and the base when an equal amount of both is…

Q: mL of Borax Solution pH with 5 mL of pH with 10 mL of Borax Solution Buffer pH with 20 mL of Borax…

A: Buffer is a substance that resists the change in pH when small amount of acid or base is added to…

Q: cid is used to titrate an unknown base, and the pH of solution is recorded during the titration.…

A: Solution: In acid-base titration, the main advantage is we can calculate unknown concentration if…

Q: In a complexometric titration experiment: Determination of Water Hardness, solve for the missing…

A: Each mole of Ca2+ reacts with 1 mol of EDTA. Also, Moles =  Mass / Molar Mass

Q: An air bubble of some size was present in the liquid in the buret at the end of the first titration…

A: Considering that you are titrating NaOH with some acid by taking NaOH in burette and acid in the…

Q: Could phenolphthalein be used as an indicator in the Kjeldahl titration?

A:

Q: 1. The endpoint of the titration is overshot! Does this technique error result in an increase, a…

A: The solution of the given question is

Q: A 0.50 mL human saliva sample was placed in a 100-mL volumetric flask and was diluted to mark with…

A: Given that, a 0.50 mL of human saliva sample was placed in a 100 mL volumetric flask and was diluted…

Q: In the titration today, you will have reached the _______________ when the indicator phenolphthalein…

A: The indicator phenolphthalein has just changed color to pale pink, which signals the reaction is…

Q: At the equivalence point…  the titrant is limiting the analyte is limiting the titrant and analyte…

A: Answer

Q: What would have happened in the titration if the phenolphthalein or thymolphthalein was not added to…

A: 1) To explain: The effect of not adding the indicator phenolphthalein or thymolphthalein to the…

Q: Suppose a student wants to determine the color change interval of an unknown indicator. Her results…

A: The experiment data given is,

Q: Title: Potentiometric Acid Titration ritulo:Tabla de ph volumen NaOH (ml) [ph Titulación NaOH 20…

A: A potentiometric curve is the plot representing the change in  the pH of solution on addition of a…

Q: n a complexometric titration experiment: Determination of Water Hardness, solve for the missing…

A: Na EDTA, Disodium Ethylene diamine tetra acetic acid (Na2H2C10H12N2O4 or Na2H2Y) reacts with Ca2+…

Q: Identify each type of titration curve. Note that the analyte is stated first, followed by the…

A: The graphical representation of change in Ph of the solution under study during the course of…

Q: You have a solution of a standardized titrant of 0.01254 M and a sample that approximately has a…

A: Given : Final concentration of titrant required = 0.01254 M Initial concentration of titrant = 0.48…

Q: In the case of over-titration, what should be done to the sample? Select one: a. Dilute the sample…

A:

Q: added (mL) NaOH added (mL) Your Turn Titration curve of Solution A Titration curve of Solution B 14…

A: Buffer capacity is defined as the amount of an acid or base that can be added to a specific volume…

Q: The color change at the endpoint should persist for 30 seconds. Explain why the time lapse is a good…

A: Solution-  Some chemical reaction occure more slowely thanusual due to1.when mixing of reactant is…

Q: What is the best sequence of steps for filling the burette with NaOH for a titration? O Lower the…

A: Burette is a laboratory equipment used in the titration experiments. It has a thin tube like…

Q: How do you find the molar mass of an unknown reagent in a titration setup given the reagent's…

A:

Q: 1. A substance that shows the endpoint of titration  2. Type of error in which the volume delivered…

A: The questions are related to the titration and are solved in the following step.

Q: To prepare the buffer in the previous problem, a total volume of 500 mL is required. The stock…

A:

Q: For each titration, predict whether the equivalence point is less than, equal to, or greater than pH…

A:

Q: BONUS: During a titration, ammonia is added to the flask and titrated with HCI. Looking at the…

A: An indicator is used in acid base titration to indicate the equivalence point of the titration. This…

Q: B.) This is the titration curve of a formic acid (a weak acid) and a strong base. Give the name of…

A: Titration is defined as the process of determining the quantity of a substance A by adding substance…

Q: Titration experiment is done to determine type of solution. a) T b) F Select one: True False

A: The statement,"Titration experiment is done to determine type of solution" is

Q: Instructions: Refer to the photo below. Answer the ff: a. Start of the titration b. Before…

A:

Q: Consider the following situation. What is the approximate molarity of the acid (the titrant) used?…

A: In the graph, the point of inflexion gives the volume of the titrant at the end point. Thus, the…

Q: Classification (acidic/basic & bufferisolution) Observed Color & Volume of Solution Calculated pH…

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

Q: You have chosen Methylamine as your weak base in the buffer solution. You have already added enough…

A: Given: Buffer solution of weak base methylamine (assuming B) and its conjugate acid HB+. pH of…

Q: Identify whether the given solution is a buffer system. Write YES or NO (Note: The Answer is case,…

A: Buffer solution :-  A solution which resists change in its pH value by the addition of small amount…

Q: why are equivalence points on a titration graph equally spaced along the horizontal axis

A: A question based on acid base titrations that is to be accomplished.

Q: Select ALL the steps you must take (but do not select any steps that are not essential) when you are…

A: The question is based on the concept of titrations. we have to identify the essential steps required…

Q: When taking a measurement with a pH meter, keep the instrument in the  Choose...storage solution or…

A: pH meter is an instrument used to experimentally determine the pH of the solutions.

Q: A) Make 500 ml of a 50 X solution of HEPES buffer. B) Use this (50X HEPES Buffer) to make 1 liter of…

A: Required : a) 500 mL of 50X HEPES Buffer b) Make 1 L of 0.5X HEPES from above solution The recipe of…

Q: A 25.000 mL aliquot of weak base that has a concentration of 0.30 M will be titrated with 0.80 M…

A: 1. Milli moles of Weak base                   = 0.30 M x 25 mL                     = 7.5 mmoles 2.…

Q: If we would like to make a 1 L buffer solution with 0.1 M concentration with a pH value of 7.0 using…

A: Buffer concentration = 0.1 M                        Volume = 1 L Required pH of Buffer = 7.0…