Hottest Questions This Month

15 votes

4 answers

6k views

Why is a C4 ring impossible?

DavePhD

39.7k

modified 11 hours ago

9 votes

2 answers

2k views

Why does potassium bifluoride exist whereas bichloride does not?

Poutnik

34k

modified Mar 14 at 9:27

6 votes

5 answers

613 views

Acidity of alcohols and basicity of amines

Poutnik

34k

modified Mar 3 at 11:16

15 votes

1 answer

2k views

What happens if you carbonate ethanol?

Oscar Lanzi

46.7k

modified yesterday

9 votes

2 answers

922 views

Why are sulfites often ignored in soil studies?

Al Lelopath

425

modified Mar 16 at 4:12

7 votes

2 answers

829 views

Does high pressure reverse reaction between zinc and sulfuric acid?

andselisk♦

36.9k

modified Mar 5 at 13:14

5 votes

3 answers

548 views

Why will changing the solvent crack the column for column chromatography?

Richie12138

401

modified Feb 25 at 18:25

10 votes

1 answer

433 views

What is the best way to deprotonate a methyl group?

user55119

14.7k

modified Mar 1 at 15:20

4 votes

2 answers

316 views

Acidic strength of nitrophenols

CommunityBot

1

modified Feb 28 at 10:54

5 votes

2 answers

291 views

Can carbocations exist in a nonpolar solvent?

Oscar Lanzi

46.7k

modified Mar 5 at 11:14

4 votes

2 answers

343 views

Looking for terminology for when a hygroscopic chemical gets moisture in it

Reinmar Bielau

69

answered 2 days ago

3 votes

1 answer

354 views

What's the exact mechanism of spin coupling in NMR?

orthocresol

69.6k

answered Mar 19 at 18:18

5 votes

1 answer

413 views

Why is kerosene being used in PUREX (plutonium uranium reduction extraction) as a solvent?

Karsten♦

35.3k

modified Mar 10 at 23:16

7 votes

1 answer

319 views

What does the 'S' stand for in base-centered cubic crystals and Bravais lattices?

AChem

36.6k

modified 2 days ago

3 votes

2 answers

362 views

Flash point of naptha and propanol

Robert DiGiovanni

1,068

modified Feb 27 at 12:11

2 votes

1 answer

584 views

Experiment to crush soda can by air pressure

Karsten♦

35.3k

modified Mar 2 at 19:11

6 votes

1 answer

245 views

What's the relation between two symmetry groups, if one has all the symmetry of the other and some more?

Neinstein

219

modified yesterday

4 votes

2 answers

164 views

Crystal structures exhibiting dimeric arrangement of tetrahedrally coordinated cations

andselisk♦

36.9k

modified Feb 26 at 16:46

5 votes

1 answer

228 views

Does boric acid really rearrange phenols?

Oscar Lanzi

46.7k

modified Feb 24 at 12:58

1 vote

2 answers

104 views

Molecular orbital picture in conjugated molecules - double bonds

Karsten♦

35.3k

modified Mar 10 at 16:50

1 vote

2 answers

115 views

A closed ring of only nitrogen atoms

Oscar Lanzi

46.7k

modified Mar 4 at 15:54

-1 votes

1 answer

183 views

Why doesn't oxygen form cyclic pentagonal compounds with itself? [closed]

Geoff Hutchison

27.5k

answered Mar 20 at 0:40

4 votes

1 answer

167 views

Colour properties of nickel complexes

Mithoron

4,432

modified Mar 14 at 14:57

-3 votes

1 answer

92 views

Have we ever managed to "add" a proton to a nucleus? [closed]

Loong

4,000

modified Feb 25 at 13:00

3 votes

1 answer

99 views

Can I convert copper(II) acetate or carbonate to copper(II) sulfate?

Tanner Nelson

41

modified Feb 27 at 2:56

2 votes

1 answer

118 views

Which hydrogen in 3-ethynyltoluene is the most acidic?

Buttonwood

26k

modified Mar 17 at 19:43

-3 votes

1 answer

71 views

Polycyclic or heterocyclic compound naming [closed]

Loong

4,000

modified Feb 27 at 9:08

5 votes

1 answer

71 views

Why are fluorine-19 NMR spectra less affected by paramagnetic centers than other common nuclei?

orthocresol

69.6k

modified Mar 7 at 17:37

3 votes

1 answer

103 views

How does tetraethyl lead prevent knocking?

Nilay Ghosh

24k

modified Feb 28 at 5:03

-1 votes

2 answers

77 views

Number of significant figures to use in reporting the concentration of the titrand in acid-base titration [closed]

andselisk♦

36.9k

modified Mar 14 at 11:18

1 vote

1 answer

76 views

Are there real chemistry bottles with this kind of label? [closed]

James Gaidis

13.4k

answered Feb 24 at 5:03

1 vote

1 answer

121 views

Why are orbits shown out of plane in popular cartoons of atomic structure? [closed]

Karsten♦

35.3k

modified 13 hours ago

2 votes

2 answers

116 views

Can you write oxidation states with negative Roman numerals?

Nilay Ghosh

24k

answered Mar 11 at 9:51

4 votes

1 answer

102 views

Can molecular hydrogen form hydrogen bonds?

Volpina

119

modified Mar 8 at 21:18

0 votes

2 answers

60 views

Can anyone help me with the derivation for the formula of entropy?

Chet Miller

12.3k

answered Mar 4 at 15:39

6 votes

1 answer

77 views

How to explain the acidity difference between these β-diketones?

Mathew Mahindaratne

38k

modified Mar 18 at 16:29

-2 votes

2 answers

118 views

Influence of (activated) charcoal on water's pH

Poutnik

34k

answered Mar 10 at 10:30

-2 votes

2 answers

85 views

Why this preparation of Alkyne by dehydrohalogenation is done in two steps? [closed]

Robert DiGiovanni

1,068

modified Mar 5 at 19:55

-2 votes

1 answer

64 views

Acidic strength order among hydroxytetralones [closed]

Mathew Mahindaratne

38k

answered Feb 26 at 1:00

-1 votes

1 answer

62 views

Carbon monoxide question [closed]

matt_black

34.3k

answered Mar 11 at 19:24

1 vote

1 answer

73 views

Why is the boiling point of a iodoalkane greater than that of the corresponding fluoroalkane?

Michael Lautman

1,136

modified Mar 1 at 16:37

3 votes

1 answer

72 views

What does it mean when a molecule is described as "optically stable"?

Amogh

273

answered Mar 6 at 20:56

-1 votes

1 answer

68 views

Potassium permanganate changes from pink to clear on reacting with urine

Mithoron

4,432

modified Feb 24 at 15:14

2 votes

1 answer

52 views

Nomenclature of monocyclic molecule with multiple insaturation

EpichinoM2

108

answered Feb 22 at 21:11

-1 votes

1 answer

84 views

Why do H and Li bond so differently with a hydroxide?

Video Carp

71

answered Mar 13 at 7:54

-2 votes

1 answer

38 views

3-Bromo-2-propylbutanal vs 2-(1-Bromoethyl)pentanal, which one is correct name according to IUPAC nomenclature standards and why?

Loong

4,000

answered Mar 3 at 18:18

1 vote

1 answer

62 views

How to name ether with ketone and carboxyl groups?

Martin - マーチン♦

43.3k

modified Feb 26 at 12:41

-2 votes

1 answer

61 views

What does the constant mean in this equation for the energy levels of an atom?

Loong

4,000

modified Mar 4 at 12:39

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