Chemistry Forum

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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.
Solubility of Calcium Oxalate in an Alcohol Solution?
  • chemisthypnos
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Theoretical interpretation to understand chemical recations
  • ISamson
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The relationship btw dielectric strength and temperature
  • HelloCthulhu
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Is there a relationship btw ionizable and polarity?
  • MrGenetic
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Tools to differentiate silver from molybdenum
  • bluemoonKY
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How does Ethyl isopropyl ketone affect graphene sheets?
  • Doctorwhodidit
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Remove aldehyde moiety (wrong word?) from aryl compound
  • JeffEvarts
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How is this diagram of the structure of diamond correct?
  • navneet9431
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Bond between the heme cofactor and the hemoglobin
  • icakeov
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Floating Water Bridge and Dielectric Strength per Volume
  • HelloCthulhu
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Work done by the system, positive or negative?
  • Mahmoud Mahmoud
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Can pH of a His buffer change during lyophilization?
  • Dhh1994
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Understanding the Mystery of Iron: From Physical Size to Water and Human Body
  • mech-eng
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Is it possible to physically separate colloids from sol'n?
  • Baho Ilok
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Noble gases don't react chemically with other substances
  • mech-eng
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Which elements form covalent bonds?
  • icakeov
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Reason for Optical Isomerism (at electron level)
  • Wrichik Basu
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What cuvette to use for fast vaporizing liquids?
  • surepic
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Why does liquid argon stop boiling after a while in dewar?
  • Phys12
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Phase diagram of water in real life
  • fog37
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Is Mercury a Danger to Your Health?
  • stephenkohnle53
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I'm getting two different answers for the atomic radius of iridium
  • Bobs
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Which Free Chemistry Simulators Are Easy for Beginners?
  • stephenkohnle53
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Why sp2 hyb. have more energy density compared with sp3?
  • MrGenetic
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Calculating Diffusion Velocity in Electrochemical System
  • ussername
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Caffeine Isomers and Their Effects on the Nervous System
  • Delta2
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Chemical Polymer Separation (PLA, ABS, HIPS, and PETG)
  • not_a_chemist
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Identifying the Source of Organic Chemistry Problems: A Scientist's Perspective
  • Carbon123
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Chemical Composition of Paper: Structure & Molecules
  • Liam A
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Flame in a background atmosphere of fuel
  • hilbert2
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Mass Spectra -- determining the method of ionization
  • Chemmjr18
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Molecular Dynamics Simulation - How Do You Find Parameters?
  • engineering lord
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Effect of Oxygen Addition on Chlorination for Manganese Removal in Well Water
  • dana
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Chemical Kinetics: velocity and equilibrium
  • dRic2
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Is B2 a compound with no sigma bond but only a pi bond?
  • Indranil
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Does the Formation of Water Molecules Affect Temperature?
  • Dylanden
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Can IR Absorption Peaks of Alkanes Be Predicted Based on Bond Strengths?
  • hilbert2
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Physics of a chemical reaction: looking for textbook recs
  • bt623
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Does anyone know of a thermally-stable endothermic reaction?
  • alphacat25
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Why does boron banana bond here?
  • Vriska
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Question about stability of Ozone
  • Kshitij Kabeer
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Enthelpy of Formation of Tetraoxygen
  • James Essig
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Butane Combustion Analysis Demo for a High School Chemistry Class
  • mishima
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Closed container vs Open container for calorimetry
  • Matthew Hoffman
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C12H22O11 = 342 g/mol What does it mean?
  • Indranil
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Sigma and Pi Bonds: Questions for Novices
  • shihab-kol
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What is the Significance of Keq in Equilibrium Calculations?
  • dRic2
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Solving Misfire in CNG Engine: Q&A
  • tworitdash
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How does pH affect secondary structure of proteins?
  • TT0
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Determining entropy as function of pressure
  • Addiw777
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What causes the generation of oxygen in a PbS and H2O2 reaction?
  • Vriska
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Does the size of a crystal used for a laser affect lifetime?
  • Chemmjr18
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Why does the mass of a polysaccharide increase when linking monosaccharides?
  • Shakattack12
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Electron dot structure, Lewis structure
  • chrischem
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Why does NO3^(2-) get reduced instead of H+ in Cu+HNO3
  • Vriska
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Relationship between activation energy and melting?
  • CuriousBanker
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Could UV lasers be used to split CO2 and H2O?
  • jcap
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Insights It's Elemental. The Periodic Table quiz - Comments
  • Greg Bernhardt
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Where Can I Find Reliable Thermodynamic Properties of Common Substances?
  • dRic2
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Equilibrium constant expression; why exponents?
  • CuriousBanker
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Can I Successfully Analyze Soil for N and K Without Commercial Test Kits?
  • Swake
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Can dissolving minerals affect water temperature?
  • RICKYtan
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Standard Enthelpy of formation of Graphene
  • James Essig
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How can I prepare a 0.1M NaOAc buffer at pH 5 using titration?
  • ReidMerrill
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Effect of a soluble volatile impurity on the boiling point?
  • a_zed24
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Does changing the spin of a particle in reaction change bond
  • Thoams Jerome
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What is the significance of the absolute HOMO in spectroscopy?
  • Chemmjr18
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How to Calculate Ideal Gas State Properties Using Molecular Dynamics?
  • hosein
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Which Forum Is Best for Introductory Chemistry Questions?
  • Wanting to Learn
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Atomic Numbers for Polyatomic Ions
  • rmiller70015
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What happens when Be(OH)2 reacts with acids and alkalies?
  • Vriska
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Exact thermodynamics equation of state
  • hosein
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Is the Indicated Bond Electrophilic or Nucleophilic?
  • JBD
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Altering pH of a luminol solution
  • ChanYoung Park
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Water molecules effect on Hydrogen bonds in precipitation
  • demander
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Can someone help me out with understanding inorganic chem?
  • Vriska
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Absorption of humidity: NaCl vs. silica gel
  • Asamad
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Why Am I Struggling with This Nucleophilic Reaction Problem?
  • Natalie456
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What Happens to Coordination Compounds When Radioisotopes Decay?
  • Chemmjr18
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Why Are My Liquid Analyzing Device Results Inconsistent at Low Concentrations?
  • surepic
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Is Crossed Aldol Condensation of Acetone and Ethyl Methyl Ketone Possible?
  • baldbrain
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Group 15 elements question (acid versus base)
  • Dhanush Shivaramaiah
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Precipitation of colloidal solutions
  • Asmaa Mohammad
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What breakthrough technology might be awarded the 2017 Nobel Prize in Chemistry?
  • ISamson
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2017 Nobel Prize in Chemistry - Expectations and Opinions
  • ISamson
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Integral constant for internal energy of an ionic liquid
  • hosein
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How Can We Improve E-Waste Recycling for Smartphones?
  • Evanish
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NAD+ / NADH Question: Absorption peaks and spectra
  • Jake578
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How water induces phase change of TiO2 after acid-etching?
  • hyunmkim
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Osmotic Pressure vs Vapor Pressure
  • Michael Noto
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Are all carbon composites produced from oil?
  • Armantium
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How to make: 20% Aluminium Chloride Hexahydrate in Acohol?
  • Seerath
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What remains after H2O evaporates from H2SO4?
  • maker
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How Can You Remove Dissolved Oxygen from Water Without Chemicals?
  • Fabricator123
  • · Replies 11 ·
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Voltage potential in PEM electrolyzers
  • HelloCthulhu
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Non-combustible exothermic oxidation of a Hydrocarbon
  • Arjun Singh Dogra
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Change temperature within very small timeframe
  • TeunKeusters
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Electricity sources vs. fossil fuels
  • ISamson
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Non-Irridescent Structural Dyes that Don't Fade
  • BillTre
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Best pH Meter to Buy: 20-40 Bucks
  • Garlic
  • · Replies 11 ·
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