Why is it important to keep the NaOH solution stoppered at all times when it is not in use?

Q: Why are the acidic and basic extracts cooled before neutralization?

A: Acid-Base reactions are exothermic. So, during neutralization it is necessary that the solutions…

Q: How many grams of pure sodium hydroxide would be required to make 2L of 1.5M sodium hydroxide…

A: Given 2L of 1.5M sodium hydroxide solution To determine grams of pure sodium hydroxide would be…

Q: If KHP used in the Standardization of a Sodium Hydroxide Solution experiment, and was not dried…

A: We know that KHP(Potassium Hydrogen Phthalate) is an excellent primary standard for titration.  KHP…

Q: Would a positive result completely indicate the presence of caffeine in case the sample within the…

A: A positive result does not fully indicate that the caffeine is present or not unless the aqueous…

Q: The instructions indicate to make sure the test tube is dry before adding the lauric acid for…

A: Colligative properties are those properties of a material that depends on the number of particle of…

Q: Suppose that when titrating your sample, you failed to remove the air bubbles from the tip of your…

A: In this question, effect of presence of air bubbles in NaOH containing burette on the calculated…

Q: please provide the correct solution for the following

A: Given alcohol is 2,3-dimethylbutan-1-ol

Q: How much 0.1M NaOH can be prepared from 300 ml of 5.0M stock solution of NaOH

A: Answer - According to the question - Given values are - M1 = Molarity of NaOH (initial) = 5.0 M M2 =…

Q: What is the value of 1.000 mL of an iodine solution (1.000 mL ≈ 0.03000 grams sodium thiosulfate) in…

A: Given 1.000 mL iosine, I2 is equivalent to 0.03000 g sodium thiosulfate, S2O32-(aq). Molar mass of…

Q: Write a detailed step-by-step procedure for preparing 100 mL of a 0.200 M NaOH solution.

A: Number of moles = mass/molar mass  Mass = moles × molar mass

Q: Explain why it is all right to leave water in a volumetric flask before you put it in the 10.00mL of…

A: It is alright to leave water in a volumetric flask before you put it in the 10.00 mL of your…

Q: Describe one method of purification?

A: To find: The description about one method of purification

Q: 100.0 mL 1.0 M NaOH 100.0 mL 1.0 M HCl how do you prepare this following solutions from  1.0 M NaOH…

A:

Q: How to prepare Saturated brine (NaCl) solution (50 mL)

A: A saturated solution of sodium chloride that means a quantity of sodium chloride solute to would be…

Q: In the conductivity test, _____________________ will result to a dimly lit light bulb. a. 1.0 M…

A: The A) , C) , D) will result in dimly lit the bulb.

Q: hy do we have to measure the boiling point of distilled water during this experiment?

A: Given : We have to explain why we measure boiling point of distilled water.

Q: Briefly describe the hazards of working with a 0.5M NaOH solution

A: while working on 0.5 M NaOH solution it will lead to take care of maximum precaution as 0.5M NaOH is…

Q: The name of the apparatus used in salting out is Your answer

A: Salting-out is the effect when adding a salt to a solvent containing an organic solute reduces the…

Q: Sodium Methylsulfonate is an inefficient detergent. Explain why

A: Dear Subscriber! You have posted multiple questions. As per our guideline, we have answered only…

Q: Fill in the blanks: Write C if Statements a and b are correct H if both statements are incorrect E…

A: In experiment of molar mass determination using freezing point depression we used a solute which…

Q: Calculate the grams of NaOH present in 1.0 mL of a 2.0\%(m/v)NaOH solution.

A:

Q: Why is a salt solution used in the preparation of soap

A: In this question we have to write the explanation why salt added in the solution during the…

Q: Explain the formation of scum when hard water is treated with soap.

A: Concept introduction: Soaps are sodium or potassium salt of long chain fatty acids, produced by a…

Q: Calculate the sodium ion (Na+)(Na+) concentration for a 0.008 M Na3PO40.008 M Na3PO4 solution

A: The given salt is Na3PO4.

Q: Discuss the preparation of 0.25 M Hydrochloric acid (HCl) solution using 3.86 mL of concentrated HCl…

A: Here

Q: In the workshop, a sol of Prussian blue was obtained by the peptization method. Which group -…

A: Introduction :  Peptization : Peptization may be defined as the process of converting a precipitate…

Q: What effect on a sodium hydroxide concentration solution would happen if a volumetric flask used to…

A: When the volumetric flask is washed with distilled water but not dried, the volume of the of the…

Q: 1. Define melting point. 2. True or False. The meiting point of a pure compound is a characteristic…

A: 1. Any substance which has a definite mass and occupies a volume in space is known as matter. Matter…

Q: What volume of 12.0 M hydrochloric acid is needed to prepare 1L of approximately 0.2 M HCl?

A: When a concentrated solution of molarity M1 and volume V1 is diluted by adding water to a solition…

Q: 1. What is the use of boiling chips? 2. List at least 3 limitations of using distillation as a…

A: Hello. Since your question has multiple parts, we will solve first question for you. If you want…

Q: What is the correct procedure in diluting a concentrated acid solution? A add the acid to the water…

A: We have to tell the procedure of diluting a concentrated acid solution. The given options are Add…

Q: How would you prepare 10 mL of a 0.25% m/v HCl solution if 1% m/v HCl was available? How much 1% m/v…

A: It is given that:Volume (V1) of solution = 10 mLConcentration of HCl solution (M1) = 0.25…

Q: Why one should swirl vigorously during the process of titration?

A: If you tirate a base into an acid with phenolphtaleine as an indicator, the indicator will go from…

Q: dried

A: • Drying is used to remove water from foods due to following reasons -  * To prevent (or inhibit )…

Q: How many moles of base are in 25.0 mL of 2.5 M NaOH solution

A: Given : volume = 25 mL = 0.025 L molarity = 2.5 M moles of base = ?

Q: How will you prepare 400 mL of 1 M H2SO4 solution using a stock solution which is 8M?

A:

Q: If water was used to rinse the pipette used for the NaOH solution aliquots, how would this affect…

A: Rinsing a pipette:- It is always advised that first, we shall rinse the pipette with distilled water…

Q: If water was used to rinse the burette used to dispense the hydrochloric acid solution, how would…

A: Analytical techniques need precision and accuracy. Errors can occur due to various reasons, personal…

Q: Prepare 250 mL of 0.1 M NaOH using the 1.0 M NaOH. How many mL of 1.0 M NaOH will be needed?

A: Dilution of the solution: When we dilute a concentrated solution with pure water, the mole of solute…

Q: Remember that all solutions used in this experiment contain 0.50M HNO3.) What happens to the HNO3…

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Q: Caffeine In water @ 100°C

A:

Q: steps for preparing the previous solution (100 mL of Na2CO3 at 15% in weight).

A: In that question we have given 15% of Na2CO3 which dissolve in 100 mL of Solution. it means that 15…

Q: 1.0 L of a 4.4 % glucose solution using a 14.o % glucose solution

A: Solution :       Dilution is defined as the addition of solvent resulting in a decrease in the…

Q: What is the dilution factor for Sample 1 if 20 µL of extract is added to 980 µL distilled water?

A: Dilution Factor = total volume of solution divided by the aliquot volume

Q: What is the difference between analytical grade salt ( NaCl) and store-bought salt

A: Analytical grade refers to the purity of the substance. The pure substance are used in laboratories…

Q: Calculate the molarity of 1.1 L of solution containing 2.6 mol NAOH. provided box. M

A: Given :- no.of moles of NaOH = 2.6 mol               volume of solution = 1.1 L  To calculate :-…

Q: Attached problem

A: Recrystallization is defined as the process in which grains of a crystal structure come in a new…

Q: You need to make 500mls of a 70% ethanol solution of EtOH from a 95% solution. How would you do…

A: The given concentration of the stock solution (C1) = 95% The volume of the stock solution to be used…

Q: A 10.00 mL portion of an HCl solution required 11.01 mL of 0.09883 M NaOH to reach an end point with…

A: