User RobChem

8

29

votes

4

answers

57k

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

21

votes

3

answers

21k

views

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

thermodynamics

Mar 24 at 14:13 Community♦ 1

11

21

votes

1

answer

19k

views

Thermodynamic vs Kinetic Sulphonation of Naphthalene

organic-chemistry reaction-mechanism aromatic-compounds

Feb 16 '17 at 0:38 Gul 1

3

19

votes

3

answers

14k

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

4

answers

27k

views

Why is pyridine used when making tosyl esters from alcohols?

organic-chemistry reaction-mechanism alcohols catalysis organosulfur-compounds

Oct 4 '19 at 9:38 John B. 1

6

16

votes

1

answer

2k

views

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

inorganic-chemistry hsab

Aug 31 '18 at 16:13 Community♦ 1

3

16

votes

1

answer

8k

views

Is cyclopentadiene or cycloheptatriene more acidic?

organic-chemistry acid-base aromaticity

Jan 8 '18 at 15:33 Community♦ 1

1

14

votes

2

answers

8k

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♦ 55.9k

13

votes

1

answer

553

views

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

organic-chemistry reaction-mechanism

Feb 9 '16 at 10:07 Jan 59k

2

12

votes

2

answers

2k

views

Effect of enatiomers in pharmaceuticals [closed]

stereochemistry history-of-chemistry drugs medicinal-chemistry pharmacology

Nov 5 '19 at 21:53 Community♦ 1

8

12

votes

2

answers

41k

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♦ 39.6k

2

12

votes

2

answers

8k

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

8k

views

Why is ammonia so much more basic than water?

acid-base

Sep 19 '18 at 15:13 Community♦ 1

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♦ 55.9k

11

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 Avyansh Katiyar 4,792

2

11

votes

1

answer

2k

views

Mechanism of styrene dimerization

organic-chemistry reaction-mechanism

Jan 11 '18 at 2:33 Simon Cooper 1

1

11

votes

1

answer

21k

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

11

votes

1

answer

5k

views

Reverse Friedel-Crafts mechanism

organic-chemistry reaction-mechanism

Mar 19 '15 at 19:36 jerepierre 9,917

2

10

votes

3

answers

37k

views

Entropy change in an adiabatic expansion

physical-chemistry thermodynamics entropy

Dec 22 '18 at 20:31 Community♦ 1

1

10

votes

3

answers

6k

views

Chemical kinetics of a reversible reaction

physical-chemistry kinetics

Dec 8 '18 at 18:49 user71113 1

10

votes

2

answers

7k

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♦ 55.9k

3

10

votes

1

answer

10k

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

2

10

votes

5

answers

3k

views

What actually is the Wavefunction?

molecules atoms quantum-chemistry

Jul 14 '17 at 10:38 juanrga 313

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

18k

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 16.5k

2

9

votes

2

answers

3k

views

Is ozone an electrophile in the ozonolysis reaction?

organic-chemistry reaction-mechanism pericyclic

Nov 13 '18 at 17:16 Mithoron 4,122

3

9

votes

3

answers

13k

views

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

thermodynamics entropy

Sep 14 '17 at 7:01 krishnarao 1

4

9

votes

1

answer

2k

views

Why is Gibbs free energy more useful than internal energy?

physical-chemistry thermodynamics free-energy

Nov 13 '16 at 15:32 Community♦ 1

5

9

votes

1

answer

2k

views

How can two orbitals constructively and destructively interfere simultaneously?

bond atoms quantum-chemistry

Jan 15 '16 at 20:43 Peter Mortensen 249

8

votes

2

answers

172

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 '19 at 7:52 andselisk♦ 31.7k

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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 pyridine used when making tosyl esters from alcohols?

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?

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

Effect of enatiomers in pharmaceuticals [closed]

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

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?

Double alkylation of benzene to form tetralin

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

Mechanism of styrene dimerization

Mechanism for formation of amide by reaction of amine with ester

Reverse Friedel-Crafts mechanism

Entropy change in an adiabatic expansion

Chemical kinetics of a reversible reaction

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

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?

Is ozone an electrophile in the ozonolysis reaction?

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

Why is Gibbs free energy more useful than internal energy?

How can two orbitals constructively and destructively interfere simultaneously?

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