5. Account for the volume contraction when alcohol and water were mixed.

Q: Sodium nitrate nano3 weighing 50g was dissolved in water weighing 150 grams. What is the mass…

A: The mass of sodium nitrate is = 50 g The mass of water is = 150 g The mass fraction of sodium…

Q: True or false? The stronger the interaction between a component and the stationary phase, the faster…

A: stronger the interaction between stationary phase lesser will be the mobility of component in the…

Q: explain the volatility of oil and compare it to water

A:

Q: explain the mechanism of cleansing action of soap.

A: Soap consists of hydrocarbon tail and head in which tail is hydrophobic (water repelling) and head…

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: theory of experience Solution Preparation (Solid State)

A: Solution is defined as a mixture of solute and solvent (water). When we mix solute like sugar or…

Q: e This diagram shows the apparatus used for distillation. What is the function of part X?

A: Distillation is one of the oldest and still most common methods for both the purification and the…

Q: After water and benzene are mixed, we see two layers. A True False

A: After water and benzene are mixed, we see two layers.   This is a True statement.

Q: In the process of a recrystallization, if crystals do not form upon cooling the solution, it is…

A:

Q: 1. Explain why coconut oil and palm oil are immiscible and miscible at a particular solvent.

A: Explain

Q: Suppose you wanted to prepare a eutectic mixture of naphthalene and diphenylamine. Determine the…

A: Naphthalene and diphenylamine forms a eutectic mixture.

Q: A sample contains a mixture of t-butanol and n-butanol. What type of distillation, simple or…

A: Fractional distillation procedure is more efficient in separating the mixture into its components.…

Q: explain the difference gel filitration and gel permeation ?

A: Both Gel filtration and gel permeation techniques involves the separation of molecules in a sample…

Q: What is solute and solvent in pickling liquor solution? and what type of solution is it?

A: A pickling liquor solution is the mixture of water , vinegar, sugar , ginger, bay leaves, table…

Q: Briefly explain why crystals form as the solvent cools during recrystallization.

A: We use recrystallization to remove impurities / purification in organic chemistry . For this process…

Q: What are the mole fraction and the mass % of a solution made by dissolving 0.50 g KI in 0.500 L of…

A: Mass of KI = 0.50 g Volume of water = 0.500 L                              = 0.500 × 1000 mL…

Q: A mixture of 6.0 g acetinilide and 4.0 g aniline is to be separated using 100 mL of water as…

A: Amount of acetanilide in mixture before separation = 6.0 g        Amount of aniline in mixture…

Q: 1. What is the effect of varying the amount of solvent on the electrical conductivity of solution?…

A: 1. The more concentrated a solution is, the higher the conductivity is. In most cases it is a…

Q: What mass of solvent will it take to make 260 g of a 7.5% w / w solution

A: Given :-  mass of solution = 260 g  % w/w = 7.5 %   To calculate :-  mass of solvent

Q: How does the data display that water is a good solvent for recrystallization of benzoic acid?…

A: Temperature (C).    Solubility(g benzoic acid/L water) 0                                     1.7 25…

Q: Describe how to prepare  100 mL of approximately 60% (w/v) NaOH from solid NaOH

A: Given :-  %(w/v) of NaOH solution = 60%  Volume of solution = 100 mL  To describe :-  Its…

Q: Predict whether methanol or hexanol would be more soluble in acetone. Explain your answer.

A:

Q: Which one is the most common method used for the purification of liquid mixtures?

A: The mixture of liquid can be separated by different methods into pure liquids.

Q: What did you observe with the freezing point of naphthalene when you added p dichlorobenzene?

A: Answer - According to the question - We  observe with the freezing point of naphthalene when you…

Q: What are emulsions? Name an emulsion in which water is a dispersed phase.

A:

Q: Why must the flask be dry before it is heated in the hot water bath ?

A: Safety Precautions are crucial and must be followed during the course of the experiment. Caution…

Q: What are the true/theoretical density values of each concentration of NaCl: 15%, 20%, and 25%?.…

A: The maximum achieveable density of a substance is known as theoretical density. It is also known as…

Q: A laboratory technician purchased 250. mL of 15.4 mol/L nitric acid. She uses this concentrated…

A: Given that : Initial volume (V1) = 250 mL = 0.25 L Initial concentration (M1) = 15.4 mol/L Final…

Q: Is 50% by mass of methanol dissolved in ethanol different from 50% by mass of ethanol dissolved in…

A: Given, Solution 1: Mass % of methanol = 50% Solution 2: Mass % of ethanol = 50% Mass % means mass of…

Q: What is the normal boiling point of this solvent?

A:

Q: molecules are

A:

Q: What is another factor that can influence fractional distillation’s success other than the number of…

A: Distillation process involving conversion of liquid into vapours that subsequently condensed back to…

Q: Calculate the volume of concentrated (98% v.v) H2SO4 that you will need to prepare 250ml of an 5.4 M…

A:

Q: Give a fundamental description of the recrystallization process. Explain why it is required and how…

A: Recrystalization is a purification technique not a separation technique.

Q: Describe the characteristics that a crystal obtained through recrystallization must have, the final…

A: Recrystallization is basically a purification technique. Recrystallization is a process in which the…

Q: Assuming an initially impure sample of acetaminophen, would you expect its melting point to change…

A: After recrystallization  melting point of acetaminophen is decreased.  We know that melting point is…

Q: What is the kinetic property observed in suspension? What is the optical property observed in…

A: It is a heterogeneous mixture of solid particle suspended in a solvent.  The solid particles are…

Q: Why does micelle formation take place when soap is added to water? Will a micelle be formed in other…

A: When we will add soap in water. There are two ends of soap molecule, one end is hydrocarbon chains…

Q: Assume that your compound recrystallizes equally well from benzyl alcohol and isopropyl alcohol.…

A: Benzyl alcohol : C6H5CH2OH isopropyl alcohol : C3H8O

Q: how would you prepare a 125.0 mL portion of 2.00 M cobalt(III) phosphate solution starting with…

A:

Q: How would you prepare 2L of 1M MgCl2 from a 5M MgCl2 stock solution?

A: The volume of stock solution required to prepare the 2L of 1M MgCl2 is calculated by considering the…

Q: Two compounds have boiling points of 130 and 150°C. Estimate the number of theoretical plates needed…

A: It is given that the boiling points of the two compounds are 130°C and 150°C, the number of…

Q: How many ml of ethenol should be mixed with 225 ml of water to make 4.5% (v/v) mixture

A: Suppose Volume of ethanol is =y ml Volume percent v/v % = [(volume of solute)/(volume of solution)]…