of the following may cause an increase in the calculated percent recovery of the recrystallized benzoic Not adding animal charcoal to the solution Adding too much solvent in the receiving flask during hot fitration

of the following may cause an increase in the calculated percent recovery of the recrystallized benzoic Not adding animal charcoal to the solution Adding too much solvent in the receiving flask during hot fitration

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter80: Crystallization: Purification Of Solids

Section: Chapter Questions

Problem 4P

See similar textbooks

Related questions

Q: this given reaction: Ni2"(aq) + 2 Cl'(aq) + n NH3(aq) Ni(NH3),Cl25). What is the value of n? "hat…

A: We know tahat coordination number of metal is 6 so value of n will be 4 That means both will give 2…

Q: Please help wiith the fourth one (C3H8O)

A: Here formula of some compounds / radical are given.We have to solve the problem for the fourth one…

Q: Methane + H2SO4 (change) --- >

A: 4 H2SO4 + CH4 → 6 H2O + CO2 + 4 SO2

Q: 02

A: The reaction of benzaldehyde with oxygen is an oxidation reaction.

Q: Use the diagram below to answer the following questions. НО. A B C What is the splitting of…

Q: NH2 CI + 2

A: Given,

Q: Use standard reduction potentials to calculate the equilibrium constant for the reaction: 2Cu2*(aq)…

Q: Q#2. Write down the products for the following reactions and name the functional groups present in…

A: Alkenes on catalytic reduction produces alkanes and alkenes on hydrolysis gives alcohols.

Q: For each of the following molecules, (1) Draw the individual bond dipole moments. (2) Rank the…

Q: In the reactions given below, what rule is best describe them." 1) B₂H CH3-(CH₂)-CH=CH₂ 2) H₂O₂…

Q: Which of the following compounds A-D can be used to synthesize molecule X by esterification? acid…

A: Esters are formed by reaction of carboxylic acid with alcohol. This process is called…

Q: (c) 35 (d) 13 3. In the periodic table, if oxygen were assigned an atomic weight of one, what would…

A: given, atomic weight of O is assumed to be 1

Q: Consider the following half-reactions: Half-reaction E° (M) Ag*(aq) + e Ni2*(aq) + 2e Zn2*(aq) + 2e…

Q: An enzyme catalyzes a reaction with a Km of 5.50 mM and a Vmax of 2.00 mMs¹. Calculate the reaction…

A: Given:- Km = 5.50 mM Vmax = 2.00 mM.s-1 => Here we have to calculate the V° for given…

Q: When the Hg2+ concentration is 1.18 M, the observed cell potential at 298K for an electrochemical…

A: We have to find the concentration of Mn²+ and ∆G° and hence tell about value of K

Q: Commercially available H2SO4 is diluted to increase its strength so that it will be safe for use by…

A: We have to tell whether the given statement is true or false

Q: Which of the following qualitative tests would ketamine test positive in? CI NH • Tollens' test •…

Q: is formed from... Br NH2 N-H (A) (B) (C) (D) (E)

Q: 3)a,b,c

Q: 3) Each molecule below can be altered to form a molecule in the point group listed by removing (at…

Q: Write a balanced equation: (NH4)2Cr2O7 -------> Cr2O3 + H2O + N2

A: Balancing a chemical equation is balancing all the atoms on both sides of a chemical reaction.

Q: b) c) a) b) c)

A: Note: First give priority to functional group. Give the numbering to parent chain. Functional group…

Q: Which name of this compound [Al F6]??

A: We have to Wright name of [AlF6]

Q: 1.) CF3CO3H b.) d)

Q: Complete the sentence: Based upon the Bohr model of the atom, electrons_ can exist at any distance…

A: According to the Bohr's model of the atoms: Electrons are present at distinct distance from the…

Q: Which of the following is an optically inactive molecule • 2 3-diaminopropionic acid •…

A: 2,3-dihydroxybutanedioic acid is optically inactive molecule. As it is a meso compound (optically…

Q: (c) NC. CN NC CN A

A: Given that, the reaction is:

Q: The following explains why TLC is done in a closed container EXCEPT: • To maintain the concentration…

A: The solution is given below -

Q: 4. H- H- H- CH3 얘 + _04 애 CH₂CH₂

A: Isomers are the compounds that are different in structure or stereochemistry . They are mainly of…

Q: 7.43 (f) 2,4-Dimethyl-3-pentanot (surruric acid, for e Choose the compound of molecular formula…

A: Given : Molecular formula of starting material = C7H13Br Alkene products:

Q: A 6.00 L tank at 22.2 °C is filled with 6.86 g of dinitrogen monoxide gas and 7.15 g of boron…

Q: FHOW is it different? 2.80 Consider a mixture of 10 billion O2 molecules and 10 billion H,…

A: Molecules are particles that are formed by two or more atoms.

Q: Ph a b доби 24 Ph Ph 25 27 CI ОН НО CI 26 28

Q: Complete and balance the following half-reactions. In each case, indicate whether the half-reaction…

A: Note - Since you have posted a question with multiple sub-parts, we will solve first three sub-parts…

Q: All are properties of ideal solvent for recrystallization except: • Dissolves the sample when hot •…

Q: QUESTION 10 What is the IUPAC name for the following compound? NH₂

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: Indicate whether each of the following compounds is an alcohol, phenol, thiol, or ether using the…

A: Alcohol group is -OH group. Phenol is -OH group attached to benzene that is C6H5OH. Thiol group is…

Question

[7]

Which of the following may cause an increase in the calculated percent recovery of the recrystallized benzoic
acid?
O a. Not adding animal charcoal to the solution
O b. Adding too much solvent in the receiving flask during hot filtration
Oc. Using cold water in rinsing the residue from the flask during hot filtration
|d. Using fluted filter paper during hot filtration
Clear my choice

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Hi please choose the correct answer :) and if you can please explain it thank you
To prevent inclusion from occurring during precipitation, the technique to follow is I. filter precipitate with less porous paper II. crystal growth be made to occur more slowly II. use of dilute analyte with concentrated precipitant IV. addition of soluble electrolyte O I & II I O I l only O Iv only O II & IV O I only
ne Calendar Badges All courses Course In extraction, usually we saturate the aqueous layer by salt in order to: Select one a Precipitate the organic solid To remove soluble impurities Oc Dry the organic layer (act as drying agent) Od. Break up emulsions TOSHIBA B/O A %24 465 6 1 7 V 8 A9 4 0 & **
Which of the following could result in a loss in yield in a mixed solvent recrystallization? i. Use of fluted filter paper in hot filtration ii. No heated solvent in the receiving flask iii.Rapid cooling iv. Both ii and iii
1%9V lli. O 1 M A;Yv 1. IF found impurity the melting point - Increase - Not effect - Decrease 2. benzoic acid can be purified by sublimation at . . pressure - high - low - normal 3. . . separates liquids with closer boiling points. * - fractional distillation - Extraction - Simple distillation with increasing 4. melting points molecular weight."
12. In IR analysis, solid samples are prepared in KBr pallet O O Thin film O Nujol Mull Organic compound sample in the solvent
6. The following are disadvantages of using filter paper in gravimetry, which is not included? a. React with strong acids and strong bases b. Break under mild stress c. Ashless filter paper is used d. Prevent use of suction 7. Which of the following can not be used to minimize supersaturation and thus used to crystalline properties? а. Нeating b. Using dilute solutions c. Rapid addition of the precipitating agent d. Air control
Match the following methods to their endpoint. * B. Appearance of the first C. A distinctive color to the A. Brick red ppt turbidity or white surface of the precipitate precipitate O O O O Gay-Lussac Liebig Mohr Volhard Fajan O O O O O D. Flesh supernatant liquid with a white precipitate O O
Spot plate color results using the solubility of iconic compounds table in expierment
Before answering the question, consider that it is during a recrystallization experiment.
Which of the followings is the important feature for choosing a good solvent for any recrystallization? O a. The compound of interest should be soluble in the solvent at high temperatures, but insoluble at room temperatures o b. c. The compound of interest should be insoluble in the solvent at high temperatures, but soluble at room temperatures O d. The compound of interest should be soluble in the solvent at all temperatures O E. The impurities must be insoluble in the solvent at high temperature
15. What is the dilution factor for 40 uL of sample added to 200 uL of diluent?