User RobChem

6

26

votes

4

answers

44k

views

What's the difference between a nucleophile and a base?

organic-chemistry acid-base

Mar 9 '17 at 13:23 Sana shahzadi 1

8

20

votes

3

answers

18k

views

Why is dU an exact differential and dq an inexact differential?

thermodynamics

Mar 1 at 13:01 juanrga 285

10

20

votes

1

answer

13k

views

Thermodynamic vs Kinetic Sulphonation of Naphthalene

organic-chemistry reaction-mechanism aromatic-compounds

Feb 16 '17 at 0:38 Gul 1

2

17

votes

3

answers

10k

views

What is the mechanism of chlorosulfonation of benzene?

organic-chemistry reaction-mechanism aromatic-compounds

Apr 27 '18 at 17:52 Bob 1

5

15

votes

1

answer

676

views

Why is diborane cleaved symmetrically by trimethylamine but unsymmetrically by ammonia?

inorganic-chemistry hsab

Aug 31 '18 at 16:13 A.K. 10.8k

2

15

votes

1

answer

5k

views

Is cyclopentadiene or cycloheptatriene more acidic?

organic-chemistry acid-base aromaticity

Jan 8 '18 at 15:33 orthocresol♦ 43.4k

1

14

votes

2

answers

6k

views

Why does the carbonyl group in an acid anhydride have two stretching frequencies?

organic-chemistry spectroscopy carbonyl-compounds ir-spectroscopy

Sep 13 '17 at 15:35 orthocresol♦ 43.4k

1

14

votes

3

answers

21k

views

Why is pyridine used when making tosyl esters from alcohols?

organic-chemistry reaction-mechanism alcohols catalysis organosulfur-compounds

Feb 27 '17 at 20:59 orthocresol♦ 43.4k

13

votes

1

answer

480

views

Base catalyzed rearrangement of an alkyl substituted cyclopent-2-enone

organic-chemistry reaction-mechanism

Feb 9 '16 at 10:07 Jan 51.1k

1

12

votes

2

answers

7k

views

In molecular orbital theory, why does s-p mixing in the dinitrogen molecule not effect the 1σᵤ orbital?

inorganic-chemistry molecular-orbital-theory

Sep 23 '15 at 11:27 Hannes 1

1

11

votes

1

answer

6k

views

Why is ammonia so much more basic than water?

acid-base

Sep 19 '18 at 15:13 Community♦ 1

7

11

votes

2

answers

32k

views

Is s-p mixing referring to hybridization or is it the mixing of one atoms s orbital with the other's p orbital?

molecular-orbital-theory theoretical-chemistry hybridization

Aug 3 '18 at 11:28 Martin - マーチン♦ 34.9k

11

votes

1

answer

2k

views

Double alkylation of benzene to form tetralin

organic-chemistry synthesis aromatic-compounds

Mar 2 '18 at 10:08 orthocresol♦ 43.4k

2

11

votes

2

answers

1k

views

Effect of enatiomers in pharmaceuticals [closed]

stereochemistry history-of-chemistry drugs medicinal-chemistry pharmacology

Jul 25 '17 at 18:07 xavier_fakerat 4,516

10

votes

2

answers

6k

views

What are the products of the reaction of 1-methoxycyclohexene with dilute hydrochloric acid?

organic-chemistry reaction-mechanism carbonyl-compounds c-c-addition

May 1 '18 at 22:58 orthocresol♦ 43.4k

1

10

votes

1

answer

2k

views

Mechanism of styrene dimerization

organic-chemistry reaction-mechanism

Jan 11 '18 at 2:33 Simon Cooper 1

3

10

votes

1

answer

8k

views

Why does hydrogen bonding in salicylic acid make it more acidic?

organic-chemistry acid-base hydrogen-bond

Oct 20 '17 at 8:50 hassan majeed 1

1

10

votes

5

answers

2k

views

What actually is the Wavefunction?

molecules atoms quantum-chemistry

Jul 14 '17 at 10:38 juanrga 285

4

10

votes

3

answers

1k

views

Whats the difference between entropy and the (dis)order of a system?

physical-chemistry thermodynamics entropy

Feb 22 '17 at 15:14 Community♦ 1

10

votes

1

answer

20k

views

Mechanism for formation of amide by reaction of amine with ester

organic-chemistry reaction-mechanism esters amines

Mar 18 '16 at 6:11 Community♦ 1

2

10

votes

1

answer

4k

views

Reverse Friedel-Crafts mechanism

organic-chemistry reaction-mechanism

Mar 19 '15 at 19:36 jerepierre 9,493

9

votes

3

answers

4k

views

Chemical kinetics of a reversible reaction

physical-chemistry kinetics

Dec 8 at 18:49 user71113 1

2

9

votes

2

answers

2k

views

Is ozone an electrophile in the ozonolysis reaction?

organic-chemistry reaction-mechanism pericyclic

Nov 13 at 17:16 Mithoron 3,848

9

votes

1

answer

18k

views

What is the difference between absolute and relative configuration in stereochemistry?

organic-chemistry stereochemistry

Feb 20 '18 at 10:59 Avnish Kabaj 3,730

3

9

votes

3

answers

11k

views

What does the Clausius Inequality mean in thermodynamics? (entropy)

thermodynamics entropy

Sep 14 '17 at 7:01 krishnarao 1

3

9

votes

2

answers

14k

views

Why is the iodide anion a good nucleophile but a poor base?

organic-chemistry acid-base reactivity

Jun 27 '16 at 23:03 Dissenter 7,027

8

votes

2

answers

765

views

Physical implications of the simple harmonic oscillator quantum mechanical solutions

physical-chemistry quantum-chemistry

Apr 6 at 7:13 Hans Wurst 53

1

8

votes

3

answers

25k

views

Entropy change in an adiabatic expansion

physical-chemistry thermodynamics entropy

Dec 22 at 20:31 Loong♦ 37.1k

2

8

votes

2

answers

14k

views

How can compounds like XeO4 form tetrahedral structures despite having double bonds?

vsepr-theory

Jul 1 '18 at 19:37 Mithoron 3,848

1

8

votes

2

answers

2k

views

Aromatic ether to phenol reagents

organic-chemistry reaction-mechanism phenols

Sep 19 '17 at 10:37 Sherman Kaplitz 1

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157 Questions

What's the difference between a nucleophile and a base?

Why is dU an exact differential and dq an inexact differential?

Thermodynamic vs Kinetic Sulphonation of Naphthalene

What is the mechanism of chlorosulfonation of benzene?

Why is diborane cleaved symmetrically by trimethylamine but unsymmetrically by ammonia?

Is cyclopentadiene or cycloheptatriene more acidic?

Why does the carbonyl group in an acid anhydride have two stretching frequencies?

Why is pyridine used when making tosyl esters from alcohols?

Base catalyzed rearrangement of an alkyl substituted cyclopent-2-enone

In molecular orbital theory, why does s-p mixing in the dinitrogen molecule not effect the 1σᵤ orbital?

Why is ammonia so much more basic than water?

Is s-p mixing referring to hybridization or is it the mixing of one atoms s orbital with the other's p orbital?

Double alkylation of benzene to form tetralin

Effect of enatiomers in pharmaceuticals [closed]

What are the products of the reaction of 1-methoxycyclohexene with dilute hydrochloric acid?

Mechanism of styrene dimerization

Why does hydrogen bonding in salicylic acid make it more acidic?

What actually is the Wavefunction?

Whats the difference between entropy and the (dis)order of a system?

Mechanism for formation of amide by reaction of amine with ester

Reverse Friedel-Crafts mechanism

Chemical kinetics of a reversible reaction

Is ozone an electrophile in the ozonolysis reaction?

What is the difference between absolute and relative configuration in stereochemistry?

What does the Clausius Inequality mean in thermodynamics? (entropy)

Why is the iodide anion a good nucleophile but a poor base?

Physical implications of the simple harmonic oscillator quantum mechanical solutions

Entropy change in an adiabatic expansion

How can compounds like XeO4 form tetrahedral structures despite having double bonds?

Aromatic ether to phenol reagents