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Chemistry Forum

Join the expert discussion on chemistry. Chemistry is the study of the nature, properties, and composition of matter. Biochemistry, Organic, Inorganic, Analytical are topics that may be discussed.

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Charge density calculations of resonance hybrids of arenium ion

Apr 10, 2012 · Replies 5 · Apr 12, 2012

Replies: 5

Views: 4K

What is it meant by characteristic IR?

Apr 10, 2012 · Replies 3 · Apr 12, 2012

Replies: 3

Views: 3K

Does Dry Ice Dissolve in Water?

Apr 5, 2012 · Replies 3 · Apr 12, 2012

Replies: 3

Views: 7K

Question about molecular orbital theory

Apr 11, 2012 · Replies 1 · Apr 12, 2012

Replies: 1

Views: 3K

Enthelpy of vapourisation vs boiling point

Apr 9, 2012 · Replies 4 · Apr 12, 2012

Replies: 4

Views: 9K

Writing Reactions: Acid/Base Balanced Reactions

Apr 10, 2012 · Replies 4 · Apr 11, 2012

Replies: 4

Views: 3K

Recommendation for Chem Lab Simulator?

Apr 5, 2012 · Replies 1 · Apr 11, 2012

Replies: 1

Views: 3K

Phase Change and Lowest Boiling Point

Apr 10, 2012 · Replies 2 · Apr 11, 2012

Replies: 2

Views: 3K

Chemicals that freeze at less than 60 Kelvin

Apr 7, 2012 · Replies 3 · Apr 10, 2012

Replies: 3

Views: 4K

Color from dental retainer is coming off, can I get poisoned?

Apr 9, 2012 · Replies 1 · Apr 9, 2012

Replies: 1

Views: 2K

Dissociation constants of NaCl/KCl

Mar 20, 2012 · Replies 3 · Apr 8, 2012

Replies: 3

Views: 30K

Can sodium chloride be categorised as a giant molecular structure

Apr 8, 2012 · Replies 3 · Apr 8, 2012

Replies: 3

Views: 6K

Sublimation of MP & VP: Separating Compounds

Apr 7, 2012 · Replies 1 · Apr 7, 2012

Replies: 1

Views: 3K

Food Ingredients: Why Add Pentanatrium Triphosphate, etc.

Jul 15, 2011 · Replies 3 · Apr 7, 2012

Replies: 3

Views: 3K

I am wondering if this would work:I need to sublimate compound 1

Apr 5, 2012 · Replies 1 · Apr 5, 2012

Replies: 1

Views: 2K

Is Hydrogen Peroxide Vapor from Decomposition Harmful?

Apr 4, 2012 · Replies 3 · Apr 5, 2012

Replies: 3

Views: 3K

Theoretical pH of manufactured product

Apr 4, 2012 · Replies 1 · Apr 5, 2012

Replies: 1

Views: 3K

Sacrificial protection and how it works

Apr 2, 2012 · Replies 13 · Apr 3, 2012

Replies: 13

Views: 8K

Understanding the Factors Behind Solid Crystal Structures

Apr 3, 2012 · Replies 5 · Apr 3, 2012

Replies: 5

Views: 3K

Ionic Mobility & Ionic Size: What's the Connection?

Apr 2, 2012 · Replies 1 · Apr 3, 2012

Replies: 1

Views: 3K

What Are Orbits, Subshells, and the Shielding Effect in Chemistry?

Apr 1, 2012 · Replies 12 · Apr 2, 2012

Replies: 12

Views: 3K

Question about ingredients in an anabolic

Apr 1, 2012 · Replies 1 · Apr 2, 2012

Replies: 1

Views: 2K

Colorful smoke from burning WHAT?

Mar 31, 2012 · Replies 5 · Apr 1, 2012

Replies: 5

Views: 3K

How can BINAP be named without chiral centres using the R S nomenclature?

Mar 30, 2012 · Replies 3 · Apr 1, 2012

Replies: 3

Views: 3K

Wasn't sure where to post this but radiotracers

Mar 31, 2012 · Replies 1 · Apr 1, 2012

Replies: 1

Views: 2K

Is it possible to make metallic hydrogen?

Mar 30, 2012 · Replies 5 · Mar 31, 2012

Replies: 5

Views: 4K

Endothermic absorb energy How do they begin in the first place?

Mar 29, 2012 · Replies 2 · Mar 30, 2012

Replies: 2

Views: 3K

Can Nitric Acid's pH be Increased to pH 10 with Water?

Mar 28, 2012 · Replies 2 · Mar 29, 2012

Replies: 2

Views: 4K

Trying to Understand Molecular Excited States Notation

Mar 28, 2012 · Replies 2 · Mar 29, 2012

Replies: 2

Views: 4K

Dehydrating Agents: How do they work and what is their role in dehydration?

Mar 26, 2012 · Replies 10 · Mar 29, 2012

Replies: 10

Views: 13K

Hydrogen Environments in o-Toluic Acid?

Mar 28, 2012 · Replies 3 · Mar 28, 2012

Replies: 3

Views: 4K

How were cations divided into groups for salt analysis?

Mar 28, 2012 · Replies 1 · Mar 28, 2012

Replies: 1

Views: 3K

Does Rotting Food Have a Direct Impact on Its Half Life?

Mar 25, 2012 · Replies 10 · Mar 27, 2012

Replies: 10

Views: 6K

Effects of soluble impurities boiling and melting points

Mar 23, 2012 · Replies 10 · Mar 26, 2012

Replies: 10

Views: 24K

Can I Use Rates Instead of Rate Constants in an Arrhenius Plot?

Mar 25, 2012 · Replies 3 · Mar 25, 2012

Replies: 3

Views: 5K

Finding pressure in gas nailer combustion

Mar 23, 2012 · Replies 6 · Mar 25, 2012

Replies: 6

Views: 3K

Why is the concentration of [OH-] not equal to the square root of Kw?

Mar 23, 2012 · Replies 4 · Mar 25, 2012

Replies: 4

Views: 16K

Doubly Degenerate Meaning: Molecular Orbitals Explained

Aug 13, 2010 · Replies 2 · Mar 24, 2012

Replies: 2

Views: 25K

Why is There a Sharp Transition Between Water and Ice?

Mar 24, 2012 · Replies 3 · Mar 24, 2012

Replies: 3

Views: 3K

Can Water Exist in a Plasma State?

Mar 30, 2010 · Replies 18 · Mar 24, 2012

Replies: 18

Views: 59K

How to test the creep deformation of polymer

Mar 20, 2012 · Replies 3 · Mar 24, 2012

Replies: 3

Views: 3K

What Products Contain Calcium Polysulfides in Europe?

Mar 22, 2012 · Replies 1 · Mar 23, 2012

Replies: 1

Views: 4K

What is the outcome of mixing these two chemicals

Mar 19, 2012 · Replies 3 · Mar 23, 2012

Replies: 3

Views: 10K

Economic physical methods for surface treatment of plastics

Mar 23, 2012 · Replies 1 · Mar 23, 2012

Replies: 1

Views: 2K

What would be some degradation products of these compounds?

Mar 22, 2012 · Replies 1 · Mar 23, 2012

Replies: 1

Views: 3K

Chemistry Department Photo: What's Happening in the Picture?

Mar 20, 2012 · Replies 6 · Mar 21, 2012

Replies: 6

Views: 2K

Molasses Fermentation: Questions & Answers

Feb 20, 2012 · Replies 7 · Mar 21, 2012

Replies: 7

Views: 20K

Why Can't Yeast Survive High Concentrations of Ethanol in Fermentation?

Mar 20, 2012 · Replies 3 · Mar 21, 2012

Replies: 3

Views: 6K

Can Salt Enter Your Bloodstream Through Skin While Wading in the Ocean?

Mar 20, 2012 · Replies 1 · Mar 20, 2012

Replies: 1

Views: 2K

Calculating Heat Energy Released in Ozone Decomposition Reaction

Feb 28, 2012 · Replies 3 · Mar 20, 2012

Replies: 3

Views: 4K

Direct Determination of Chirality: Explained for Non-Chemists

Mar 20, 2012 · Replies 1 · Mar 20, 2012

Replies: 1

Views: 3K

Salt Bridge & Voltaic Cells Experiment

Dec 21, 2011 · Replies 20 · Mar 19, 2012

Replies: 20

Views: 12K

Antibonding orbital, LUMO and HOMO

Mar 19, 2012 · Replies 1 · Mar 19, 2012

Replies: 1

Views: 6K

Why is H4SiO4 unstable in hydrolysis reactions?

Mar 18, 2012 · Replies 2 · Mar 19, 2012

Replies: 2

Views: 7K

Bromination of an alkene using isopropanol

Mar 17, 2012 · Replies 1 · Mar 18, 2012

Replies: 1

Views: 3K

Removing beverage can UV-coating?

Feb 28, 2012 · Replies 6 · Mar 18, 2012

Replies: 6

Views: 4K

Is click chemistry really viable for in vivo applications?

Mar 14, 2012 · Replies 5 · Mar 17, 2012

Replies: 5

Views: 4K

The single most interesting chemistry journal article I've read in 5 years

Mar 16, 2012 · Replies 1 · Mar 17, 2012

Replies: 1

Views: 4K

Does pH Changing with Water & Acids Matter?

Mar 16, 2012 · Replies 1 · Mar 16, 2012

Replies: 1

Views: 2K

What Are the Products of Brominating trans- and cis-1,2-Diphenylethene?

Mar 15, 2012 · Replies 1 · Mar 16, 2012

Replies: 1

Views: 4K

Do elemental peaks on SEM-EDS spectra relate to concentration

Mar 14, 2012 · Replies 1 · Mar 15, 2012

Replies: 1

Views: 3K

Why Does Sodium Pentobarbital Precipitate Dissolve with More HCl?

Mar 13, 2012 · Replies 7 · Mar 14, 2012

Replies: 7

Views: 3K

How do you make synthetic opal?

May 4, 2009 · Replies 10 · Mar 14, 2012

Replies: 10

Views: 50K

Is charge conserved in positron emission?

Mar 13, 2012 · Replies 3 · Mar 14, 2012

Replies: 3

Views: 3K

How to use Beer-Lampert law without knowing pathlength?

Mar 13, 2012 · Replies 9 · Mar 14, 2012

Replies: 9

Views: 4K

How Does Decreasing Temperature Affect SO3 Production in a Chemical Equilibrium?

Mar 6, 2012 · Replies 3 · Mar 14, 2012

Replies: 3

Views: 4K

If something becomes an ion, is its zeff changed?

Mar 13, 2012 · Replies 2 · Mar 14, 2012

Replies: 2

Views: 3K

Detailed electrochemistry question

Mar 6, 2012 · Replies 5 · Mar 13, 2012

Replies: 5

Views: 3K

How Do I Name the Cyclic Isomer of C2H4O?

Mar 12, 2012 · Replies 8 · Mar 13, 2012

Replies: 8

Views: 5K

PH of solution containing HCl and bicarbonate

Mar 12, 2012 · Replies 3 · Mar 13, 2012

Replies: 3

Views: 14K

How Does Salt Preservation Work in Meat?

Mar 11, 2012 · Replies 3 · Mar 13, 2012

Replies: 3

Views: 3K

Will the orbits of electrons be affected by strong magnetic field?

Mar 12, 2012 · Replies 1 · Mar 12, 2012

Replies: 1

Views: 2K

What occupies the spaces between particles in a gas?

Mar 12, 2012 · Replies 3 · Mar 12, 2012

Replies: 3

Views: 13K

Motion of electrons in orbitals and shape of orbitals

Aug 9, 2011 · Replies 5 · Mar 12, 2012

Replies: 5

Views: 15K

D-orbital Splitting: Coordination Compounds vs. Transition Metal Compounds

Mar 10, 2012 · Replies 9 · Mar 12, 2012

Replies: 9

Views: 4K

Will a Carbonate React with Carbonic Acid? A Chemical Reaction Explanation

Mar 11, 2012 · Replies 3 · Mar 12, 2012

Replies: 3

Views: 3K

What is special about the Avogadro's Constant ?

Feb 16, 2012 · Replies 14 · Mar 11, 2012

Replies: 14

Views: 5K

Can I prove spontaneity using the entropy change?

Mar 10, 2012 · Replies 6 · Mar 11, 2012

Replies: 6

Views: 4K

Cellulose Degradation: Uncovering the Role of Enzymes in Paper Conservation

Mar 10, 2012 · Replies 4 · Mar 10, 2012

Replies: 4

Views: 6K

Conceptual question about rate laws

Mar 9, 2012 · Replies 1 · Mar 10, 2012

Replies: 1

Views: 3K

Calculating the visible emission spectrum for hydrogen

Mar 9, 2012 · Replies 2 · Mar 9, 2012

Replies: 2

Views: 3K

Why Does the Value of the Universal Gas Constant Change?

Mar 7, 2012 · Replies 2 · Mar 8, 2012

Replies: 2

Views: 2K

Converting the molarities into moles but I'm having trouble with the reaction

Mar 7, 2012 · Replies 2 · Mar 8, 2012

Replies: 2

Views: 3K

Splashed Potassium Dichromate Solution

Mar 7, 2012 · Replies 2 · Mar 7, 2012

Replies: 2

Views: 2K

SN1 reactions do not make sense to me

Mar 4, 2012 · Replies 1 · Mar 7, 2012

Replies: 1

Views: 2K

Proper chemical to dissolve adhesive tape

Mar 3, 2012 · Replies 9 · Mar 7, 2012

Replies: 9

Views: 21K

Is Charge Essential for Colloids? A Review of Zeta Potential

Mar 7, 2012 · Replies 1 · Mar 7, 2012

Replies: 1

Views: 2K

Dissociation degree of polyprotic acids

Mar 6, 2012 · Replies 2 · Mar 7, 2012

Replies: 2

Views: 3K

Where Can I Find Exchange Current Densities for Chromium?

Mar 6, 2012 · Replies 2 · Mar 6, 2012

Replies: 2

Views: 3K

Why is Area under Desorption Curve (TPD) the total particles desorbed?

Apr 16, 2011 · Replies 1 · Mar 6, 2012

Replies: 1

Views: 4K

(at the most fundamental level) why does energy release upon chemical reactions?

Mar 5, 2012 · Replies 5 · Mar 5, 2012

Replies: 5

Views: 8K

Simple reactions for non-chemist?

Mar 5, 2012 · Replies 6 · Mar 5, 2012

Replies: 6

Views: 3K

Do chocolates have a melting point and what controls it?

Mar 3, 2012 · Replies 9 · Mar 5, 2012

Replies: 9

Views: 3K

Ring Expansion of 1,3-Methylcyclopentene with H-Br

Mar 3, 2012 · Replies 12 · Mar 4, 2012

Replies: 12

Views: 7K

Definition of the Gibbs free energy

Mar 3, 2012 · Replies 1 · Mar 4, 2012

Replies: 1

Views: 3K

What is the dipole moment of 1,3,5-trichloro benzene based on the given data?

Mar 4, 2012 · Replies 1 · Mar 4, 2012

Replies: 1

Views: 3K

Sulfuric Acid - Ionic, Polar Molecular or Non Polar Molecular

Mar 2, 2012 · Replies 2 · Mar 3, 2012

Replies: 2

Views: 16K

Confused about gibbs free energy

Mar 2, 2012 · Replies 3 · Mar 3, 2012

Replies: 3

Views: 3K

How to determine enthelpy of formation

Mar 2, 2012 · Replies 4 · Mar 3, 2012

Replies: 4

Views: 3K

Standard conditions vs. Standard state

Mar 2, 2012 · Replies 1 · Mar 3, 2012

Replies: 1

Views: 13K

Chemistry

Welcome to the Chemistry forum!

Chemistry is the scientific study of matter, its properties, composition, structure, and the changes it undergoes during chemical reactions. It plays a central role in understanding the building blocks of the universe, encompassing the study of atoms, molecules, elements, and compounds.

Chemists investigate the interactions and forces between particles at the atomic and molecular levels, contributing to our understanding of various natural phenomena. The field is divided into branches such as organic chemistry, inorganic chemistry, physical chemistry, and biochemistry, each focusing on specific aspects of chemical systems.

Chemistry is not only a foundational science but also a driving force behind technological advancements, materials development, pharmaceuticals, and numerous industrial applications.

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