nilee

This page lists questions and answers that were posted by visitors named nilee.

Questions

The following questions were asked by visitors named nilee.

Potassium tert-butoxide is a common base for E2 reactions because it is _______. A. weak base B. an organic base C. a strong base D. a bulky base

What is the theoretical volume (at STP) of butene product that can be obtained from the dehydration of 0.412 g of 2-butanol? (MW = 74 g/mol; 22.414 L/mol) A. 125 L B. 1.36 L C. 125 mL D. 0.000248 L Can you please show calculations

When performing a dehydration reaction, what may be done to drive the equilibrium to the right: A. removal of the product as it is formed B. increasing the concentration of the solvent C. doubling the concentration of the acid catalyst D. lowering the rea...

In order to obtain pure synthetic plant hormone, a 2:1 mixture of water and ethanol is used as the crystallizing solvent. Why is a solvent mixture used? A. Organic compounds are not soluble in pure ethanol. B. Ethanol and water have similar boiling points...

Why is 4-chlorophenol soluble in 2.5M NaOH solution, but not in water? A. Phenol is a weak acid so it can be deprotonated under basic conditions. B. Aqueous acid destroys 4-chlorophenol. C. 4-chlorophenol is only soluble in water at low temperature. D. A...

How many peaks would be expected in the 1H NMR spectrum for mesitylene? A. 2 B. 6 C. 3 D. 12 E. 9

The E1 elimination reaction proceeds through a _________ . A. concerted process B. carbocation intermediate C. polarized transition state

Which of the following products of the acid-catalyzed elimination of 2-pentanol is the Hoffmann elimination product? A. trans-2-butene B. cis-2-butene C. 1-butene

In order for the E2 elimination of an alkyl bromide to occur, the β-hydrogen and the bromide leaving group must have ____________ arrangement. A. an orthoganol B. a syn C. an anti-periplanar D. an eclipsed

The purpose of a gas trap in the Diels-Alder reaction set up is to A. Trap oxygen gas B. Trap the diels alder product C. Trap sulfur dioxide gas D. Trap carbon dioxide gas E. Trap nitrogen gas

The purpose of adding concentrated H2SO4 to the Diels-Alder adduct was to: A. hydrolyze the product to make the product precipitate more easily B. catalyze the diels alder reaction C. use Le Chatelier’s principle to drive the reaction to completion D. to...

You perform a Diels-Alder reaction using 2.0 g butadiene sulfone (MW=118.15 g/mol), 1.2 g maleic anhydride (MW=98.06 g/mol) and 0.8 mL xylenes (MW=318.5 g/mol, density=0.862 g/mL). What is the theoretical yield of the reaction? A. 0.017 mols B. 0.052 mols...

The Diels-Alder reaction is classified as a: A. polar reaction B. radical reaction C. substitution reaction D. pericyclic reaction E. rearrangement reaction

In order for a Diels-Alder reaction to take place the diene must be in what conformation? A. cis B. trans C. s-trans D. anti E. s-cis

Order the following in order of increasing bond vibration frequency: O-H, sp3 C-H, sp C-H, sp2 C-H A. O-H < sp3 C-H < sp C-H < sp2 C-H B. sp3 C-H < O-H < sp2 C-H < sp C-H C. sp2 C-H < sp3 C-H < sp C-H < O-H D. sp3 C-H < sp2 C-H < sp C-H < O-H E. O-H < sp...

Bond vibration frequencies are directly related to: A. The amount of atoms in a compound B. The electronegativity of the atoms C. The amount of sample on the IR plate D. Mass of the atoms E. All of the Above

Where would one expect to see a peak corresponding to a carbonyl group A. 1350-1500 B. 1625-1800 C. 1700-1825 D. 1775-1900 E. 1625-1850

Which of the following would have the lowest stretching frequency A. C=C B. C-O C. C=O D. N=O E. C-H

Answers

The following answers were posted by visitors named nilee.

I thought that it would be 125 ml...I don't thing it is write though... I think I did the conversation wrong though... All I want to know is how to do the conversation correctly..

I thought it was C...

I thought it was A