User RobChem

6

28

votes

4

answers

51k

views

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

organic-chemistry acid-base

Mar 9 '17 at 13:23 Sana shahzadi 1

10

21

votes

1

answer

15k

views

Thermodynamic vs Kinetic Sulphonation of Naphthalene

organic-chemistry reaction-mechanism aromatic-compounds

Feb 16 '17 at 0:38 Gul 1

8

20

votes

3

answers

20k

views

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

thermodynamics

Mar 1 '19 at 13:01 juanrga 295

2

17

votes

3

answers

12k

views

What is the mechanism of chlorosulfonation of benzene?

organic-chemistry reaction-mechanism aromatic-compounds

Apr 27 '18 at 17:52 Bob 1

2

16

votes

1

answer

6k

views

Is cyclopentadiene or cycloheptatriene more acidic?

organic-chemistry acid-base aromaticity

Jan 8 '18 at 15:33 orthocresol♦ 48.8k

1

15

votes

4

answers

23k

views

Why is pyridine used when making tosyl esters from alcohols?

organic-chemistry reaction-mechanism alcohols catalysis organosulfur-compounds

Oct 4 at 9:38 John B. 1

5

15

votes

1

answer

1k

views

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

inorganic-chemistry hsab

Aug 31 '18 at 16:13 A.K. 11.1k

1

14

votes

2

answers

7k

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♦ 48.8k

13

votes

1

answer

504

views

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

organic-chemistry reaction-mechanism

Feb 9 '16 at 10:07 Jan 55.3k

2

12

votes

2

answers

2k

views

Effect of enatiomers in pharmaceuticals [closed]

stereochemistry history-of-chemistry drugs medicinal-chemistry pharmacology

Nov 5 at 21:53 Mathew Mahindaratne 14.9k

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

7k

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

36k

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♦ 37.4k

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♦ 48.8k

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♦ 48.8k

1

10

votes

1

answer

19k

views

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

organic-chemistry stereochemistry

Feb 20 '18 at 10:59 Avnish Kabaj 4,529

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

9k

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

3k

views

What actually is the Wavefunction?

molecules atoms quantum-chemistry

Jul 14 '17 at 10:38 juanrga 295

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

3

10

votes

2

answers

15k

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 15.7k

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 9,649

9

votes

3

answers

5k

views

Chemical kinetics of a reversible reaction

physical-chemistry kinetics

Dec 8 '18 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 '18 at 17:16 Mithoron 4,025

3

9

votes

3

answers

12k

views

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

thermodynamics entropy

Sep 14 '17 at 7:01 krishnarao 1

8

votes

2

answers

159

views

Why is it necessary to consider infinitesimal changes in p,V,T for H,U and G given that they're state functions?

physical-chemistry thermodynamics free-energy

Dec 11 at 7:52 andselisk♦ 28k

8

votes

2

answers

845

views

Physical implications of the simple harmonic oscillator quantum mechanical solutions

physical-chemistry quantum-chemistry

Apr 6 at 7:13 Hans Wurst 163

1

8

votes

3

answers

29k

views

Entropy change in an adiabatic expansion

physical-chemistry thermodynamics entropy

Dec 22 '18 at 20:31 Loong♦ 38.5k

2

8

votes

2

answers

15k

views

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

vsepr-theory

Jul 1 '18 at 19:37 Mithoron 4,025

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157 Questions

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

Thermodynamic vs Kinetic Sulphonation of Naphthalene

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

What is the mechanism of chlorosulfonation of benzene?

Is cyclopentadiene or cycloheptatriene more acidic?

Why is pyridine used when making tosyl esters from alcohols?

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

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

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

Effect of enatiomers in pharmaceuticals [closed]

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

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

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

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?

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

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 does the Clausius Inequality mean in thermodynamics? (entropy)

Why is it necessary to consider infinitesimal changes in p,V,T for H,U and G given that they're state functions?

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?