Out of water, ethnaol, and pentane, i think pentane would be a good solvent at room temperature for naphthalene, C10H8.  Would this solvent also be a good recrystallizing solvent? Why or why not?

Q: Which of the following solutes in each pair would you expect to be more soluble in the solvent…

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Q: What is the mole fraction of solvent of a solution in which 3.46 grams of liquid benzene (C6H6) has…

A:

Q: Which of the solvents given below will boil first? ethanal = 120.26 KPa %3D ethanoic acid= 1.94 KPa

A: Given-> Ethanal = 120.26 KPa Ethanoic acid = 1.94 KPa

Q: In which option is the order showing whether the questions given below are true or false? () If the…

A: The statement first is incorrect because complete purification through distillation is not possible…

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Q: Pure benezene boils at 80.1 C and has a Kb of 2.53 C/m. If 120.0 g of iron sulfide are dissolved in…

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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: Which of these is NOT a criteria for selecting a good solvent for recrystallization? (A) Solvent…

A: Recrystallization is a process to purify compounds. It is based on the solubility. The principle is…

Q: In which solvent is C5H12O2 most soluble? a. C7H8 b. C2H6O c. C3H6O d. H2O

A: C5H12O2 is polar. Thus it is soluble in polar solvents i.e. H2O.

Q: You've just synthesized a new molecule and need to purify it by recrystallization. You find that it…

A: Recrystallization is one of the purification method . Mostly used for purify solid organic…

Q: 1. An organic student did an experiment extracting benzoic acid from a mixture of other organic…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

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: 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: Why does the temperature not change while the pure cyclohexane is freezing? This question is based…

A: The molar mass of a solute can be determined by measuring the depression in the freezing point due…

Q: Identify 2 sources of errors in each of the steps in making of a solution. Explain whether a…

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Q: Consider a solution in which 33.0 grams of scandium phosphate (ScPO4) has been added to 450 grams of…

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

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Q: 11) A distillation is set up between molecule A (vapor pressure 0.781 atm) and molecule 8 (vapor…

A: Here we have to determine the mole fraction of A and B in the initial liquid mixture. It can be…

Q: Suppose you have 1 g of a solute X (K = 10) in 100 mL of water (solvent 1) and you want to extract…

A: Liquid-liquid extraction

Q: I’ve done this question but I think I’ve done it wrong. Calculate how much 95% Ethel alcohol will be…

A: The relationship between milligrams (mg) and grams (g) is written below.1 g = 1000 mg

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: The position of the phases in the separatory funnel (whether the top or bottom phase) is dependent…

A: “Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: For each compound, pick the better solvent for dissolving it, water or hexane (C6H14).   I2…

A: We know that like dissolves like. And since water is a polar solvent while hexane is a non polar…

Q: How many grams of sucrose, C12H22O11, must be dissolved in 90 g of water to produce a solu­tion over…

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Q: molecules are

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Q: TRUE OR FALSE, if false then give the correct word to make the statement true then explain 1.…

A: The sublimation of a solid occurs when, The solid has high vapor pressure The phase transition…

Q: Why is flameless heating used for heating a solution in hexane or diethyl ether during a…

A: Answer: 1. This recrystallization technique is used to purify the chemicals. In recrystallization,…

Q: What weight of potassium permanganate is required to prepare 250ml of a w/v solution such that 10 mL…

A: Initial volume ×initial concentration = final volume × final concentration

Q: When would you use fractional distillation vs. fractional crystallization?

A: fractional crystallisation :  This technique is used to  refine substances based on differences in…

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

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Q: In the preparation of 1,200 mL of 70% alcohol from stock absolute alcohol solution, what is the…

A: Here we will consider v/v % concentration, i.e. 70 % alcohol solution implies out of 100 mL solution…

Q: What are the significance of the melting point determination in pharmacy? (own words)

A: Melting point is the temperature at which solid Substance changes into liquid.  The branch of…

Q: How the concept of vapor pressures would differ between simple distillation and steam distillation…

A: The solution  of the question is given below:

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

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Q: Briefly describe the principles for separating the components of a mixture by solvent extraction.

A: Extraction is the process of separation of substances from its aqueous solution by shaking with a…

Q: Question 1. a) You think that you have isolated a substance A in the lab. It melts at 75 – 77C.…

A: Melting point of a compound is the temperature at which its liquid state and vapour state are in…

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: Explain the principle behind vacuum distillation.

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Q: A 38.0 µM sample solution occupies 3.03% of the length of a 59.6 cm long capillary that has a…

A: To calculate moles of solution , we would need to calculate volume of solution.  For this we would…

Q: A liquefied mixture of n-butane, n-pentane, and n-hexane has the following composi- tion in percent:…

A: The fraction of a particular entity in a mixture containing that entity amongst other chemical…

Q: Determine the mole fraction of p-dichlorobenzene dissolved in 1.00L of cyclohexane that shifts the…

A: Here, we have to determine mole fraction and mass of p-dichlorobenzene (solute) dissolved in 1.00L…

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: 1. For each compound, pick the better solvent for dissolving it, water or hexane (CgH14). 1. 2 1.…

A: Interpretation: For the given compounds, appropriate solvent for dissolving it, water or hexane…

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)]…

Q: Explain why one would recrystallize a solid from a solvent pair instead of a single solvent.…

A: Explain why one would recrystallize a solid from a solvent pair instead of a single solvent.…

Q: Two students measured NH3 in the aquarium and observed values of 106 and 115 mV. What NH3 nitrogen…

A: b) Calculate concentration of NH3 = [N] for E = 106 mV and 115 mV for E = 106 mV using the equation:…