The instructions indicate to make sure the test tube is dry before adding the lauric acid for freezing point measurements.  Why is this important?  What effect will this have on your freezing point measurements?  Explain your answer.

Q: A capillary of 10 cm long is introduced into a beaker containing hydrochloric acid at 25 C. Upon…

A: Given: Height of capillary tube = 10 cm Upon dipping 1 cm in beaker of HCL, rise = 8 cm in capillary…

Q: The storage bottle should be a dark or AMBER-colored reagent bottle

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Q: A student accidentally overshoots the end point and adds too much hydrochloric acid. Is the…

A: Since the reaction taking place is  KOH + HCl ----> KCl + H2O Hence from the above reaction we…

Q: The volume of hydrochloric acid required to prepare an approximate solution of 0.2 normal…

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

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Q: At the beginning of a fractional distillation, the temperature of the vapor at the top of the…

A: I Assume it is option - 1st that is The approximate boiling point of the liquid in the vapor phase

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: A student determined her H2SO4 solution concentration to be 0.0610 M.  The actual concentration of…

A: Given information is:    Determined concentration of H2SO4 = 0.0610M             Actual…

Q: Why is a boiling stone used when solvents are heated to boiling point?

A: Boiling stones are small pieces of black porous rock that are added to solvent or solution.

Q: What should be considered when preparing the potassium permanganate solution?

A: Titration is one of the most common method of qualitative analysis of substances given. It is done…

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: Write a procedure explaining how to prepare a solution with a 3.45 % by weight of solid compound…

A: 3.45% by weight means 3.45 g of solute in 100 g solution. so in 100 g mass of solute is 3.45 g and…

Q: Explain briefly why washing the soap product with water is a very important step before using the…

A: Soaps are made from natural ingredients, such as plant oils (coconut, vegetable, palm, pine) or…

Q: You are asked to prepare a  solution of sodium sulfate decahydrate with a final concentration of…

A: Given, You are asked to prepare a  solution of sodium sulfate decahydrate with a final concentration…

Q: Why would buffered solution tests be compared to distilled water?

A:

Q: The approximate molarity of HCl solution was 0.1 M, What is the precise molarity of Hydrochloride…

A: The Molarity  is defined as Moles of HCl dissolved per litre of solution.

Q: How do attractive forces between like molecules compare with attractive forces between unlike…

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

Q: 62. In the process of recrystallization, what is the compound that undergo in this process?" Benzoic…

A: The correct option is:

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: What will be the solubility of the sugar if dissolved in normal water, 60 degrees celsius water, and…

A: The concept used here is Solubility of solid in liquid increases with increase in temperature.

Q: What are the 4 steps of an appropriate and safe laboratory procedure for preparing the solution?…

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Q: Which monovalent hydroxide below supports the following data: A 0.515 g sample dissolved in 24.7…

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Q: 1. Briefly explain why water is considered as the universal solvent. 2. Using the concept of IMFA,…

A: We know water is the universal solvent.Let's discuss why.And also we have to discuss why the…

Q: how to make a stock solution of 10% ethanol and 40% water? do the necessary volume to concentration…

A: To make a stock solution of 10% ethanol and 40% water.

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: Give good hand written explanation Asap What volume of concentrated hydrochloric acid solution…

A: Given that -  Number of moles of hydrochloric acid solute = 2.1 mol  We know that most Concentrated…

Q: Describe how to prepare exactly 100 mL of 1.00 M HCl from 12.1 M HCl reagent.

A: Concentration or Molarity is defined as “the mole of the solute per unit volume of the solution”. It…

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: 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: 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: Sugar will dissolve most quickly if the solution is 1. allowed to sit 2. stirred rapidly 3. stirred…

A: The sugar solution is a mixture of sugar and water. It is a true solution. A solute is a substance…

Q: The volume of hydrochloric acid required to prepare an approximate solution of 0.2 normal…

A: Normality is no. Of gram equivalent of solute, present per litre of the solution.

Q: 1. You find a separatory funnel set up in a fume hood. There are clearly two visible layers.…

A: The liquid or solvent (be it aqueous or organic) with higher density forms the bottom layer and the…

Q: In which compound will ammonium phosphate dissolve? Select one: a. carbon tetrachloride b. oil c.…

A: Ammonium phosphate formula is  (NH4)3PO4 Ammonium phosphate is a salt form.  Ammonium and phosphoric…

Q: How to prepare 1.10M of sodium thiosulphate

A: Given ,molarity of sodium thiosulphate is 1.10M

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

A: We have to tell the reason that why NaOH solution is to be kept stoppered at all times when it is…

Q: In general terms, please describe how to carry out a recrystallization. Just give the steps that…

A: Recrystallization is a slow process by which a solid organic compound can be purified. In this…

Q: Define the process of salting. What is the use of salting?

A: Salting is a  preservative method in which the common salt (Nacl), sodium chloride is used as the…

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

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Q: Because the three possible unknowns (cinnamic acid, vanillin and 4- hydroxybenzaldehyde) have either…

A: #Q.1: We use the below formula to find freezing point depression, ∆Tf.  ∆Tf = i * Kf * m where i =…

Q: 1. Compute for the amount of NaOH pellets needed to prepare 500 mL of 0.1 M solution. 2. Explain in…

A: Molarity is the number of moles of the solute present in per litre solution. It is denoted by the…

Q: Solvent Isotonic Hypertonic Hypotonic What is Iodine used to detect? Describe the assay/test. What…

A: Solution- A homogeneous mixture of two or more substance is known as solution.

Q: What is the disease associated if there is an excess amount of uric acid in urine? Briefly explain…

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