Why is a buffer solution best when pH = pKa i.e. when A-/HA=1

8yr ⋅

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Le Chatelier's Principle: How can the equilibrium shift, while Kc remains constant?

11yr ⋅

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Alternatives to Ring Stands

11yr ⋅

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Which one of the compounds listed would we use in order to get the highest concentration of sulphate ion in a saturated solution?

10yr ⋅

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Will the water at the bottom of the tube boil at the same temperature as the water at the top of the tube?

10yr ⋅

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Is it possible to cut yourself on pyrite?

11yr ⋅

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Molecular explanation of the Hofmeister Series

13yr ⋅

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Total valence electrons in a rhodium complex

8yr ⋅

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Why is current non-zero when applied potential is still below E$^0$ in cyclic voltammetry?

11yr ⋅

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Confused about parity of atom and chirality

10yr ⋅

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How to find the valence of transition elements?

10yr ⋅

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Hydrolysis under basic conditions

10yr ⋅

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Creation of ester from acetylene derivative

10yr ⋅

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Absolute configuration when hydrogen (lowest priority group) is in the plane of the page (and not a wedge or dash)

8yr ⋅

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Alkane nomenclature - choosing the parent chain - maximize or minimize substituents?

10yr ⋅

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Structure of N2O2

8yr ⋅

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How to determine the composition for a sucrose/ zinc nitrate solution from its freezing point?

10yr ⋅

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Why does graphite conduct electricity?

10yr ⋅

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Difference between conformational, constitutional, and structural isomers and the same and different molecules

11yr ⋅

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How do 1s and 2p orbitals overlap?

11yr ⋅

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Assigning Carbon NMR

10yr ⋅

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Where did the INN name of Fentanyl come from?

12yr ⋅

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What is the entropy of mixing of two ideal gases starting out with different pressures?

10yr ⋅

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How do I figure out the relative polarity of organic compounds?

10yr ⋅

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Does someone know the name of this equipment?

10yr ⋅

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Synthesis of benzophenone

10yr ⋅

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Synthesis of synthetic detergent with Friedel Crafts Acylation

10yr ⋅

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Restricted synthesis; formation of nucleophile and electrophile from one carbon source

10yr ⋅

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What will be the major product of this Wurtz reaction?

12yr ⋅

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Zeolite process

10yr ⋅

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Why does potential chemical energy decrease with increasing oxidation of carbon?

10yr ⋅

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Carboxylate cage concept

10yr ⋅

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para-dichlorobenzene - number of proton NMR signals

10yr ⋅

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Hydrogen and deuterium exchange

10yr ⋅

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Formation of 2,4-Dichlorophenol by free chlorine mediated oxidation of Triclosan

10yr ⋅

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Will this reaction lead to diazonium chloride?

11yr ⋅

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Acidity of ester and benzoic acid

10yr ⋅

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What is the IUPAC name of this Di-Benzene like compound? Is it Aromatic?

8yr ⋅

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Are sulfonyl-carboxylates stable in water?

11yr ⋅

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Effect of dopant size on XRD peak shift

11yr ⋅

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How to derive partial gas equation?

12yr ⋅

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How many molecules of O2 are needed to oxidise 25g of Mg?

11yr ⋅

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Corrosion of metals and observations in the agar medium?

10yr ⋅

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How is ammonia used in production or processing of steel?

10yr ⋅

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Epoxide Ring Opening - Paradoxical Statement

10yr ⋅

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What is more important, to have the parent chain be the cycle or the chain that has an hydroxyl group

8yr ⋅

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Electronic configuration of Ace-Ala-Nme

10yr ⋅

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Compound formed from concentrated sulfuric acid and sulfur

8yr ⋅

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Reduction and Oxidation - Alternate definitions

10yr ⋅

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Solar still and how it works

10yr ⋅

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Can I use the hypotenuse of the pythagorean theorem to compute the work?

10yr ⋅

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What copper oxide is being created upon electrolysis?

10yr ⋅

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Homoassociation and Acid Strength

10yr ⋅

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Interpretation of the following IR?

10yr ⋅

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Why is hydrogen sulfate put together as it is?

10yr ⋅

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Meaning of 1,1,1,2 in 1,1,1,2-Tetrafluoroethane & similar

10yr ⋅

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What should be the name of this substituted cyclopentane?

8yr ⋅

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Nomenclature with Complex Substituents

10yr ⋅

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Does the arrangement of atoms around a chiral carbon matter?

10yr ⋅

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What products will the following reactions yield?

10yr ⋅

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R,S Configuration

10yr ⋅

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Balancing Redox Equations

10yr ⋅

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Hydrolysis of vinyl silanes

8yr ⋅

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Fractional Bond Order - How to Visualize?

10yr ⋅

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Protoporphirinogen IX formation in Heme synthesis

10yr ⋅

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Nomenclature - Common vs IUPAC Names and Alphabetical Priorities

10yr ⋅

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Delta G at Equlibrium

10yr ⋅

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What does reaction exothermicity say about the stability of molecules

11yr ⋅

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Wurtz reaction of 1-bromo-3-chloro cyclobutane

10yr ⋅

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Does anything like this covalent concerted bond exchange reaction exist?

10yr ⋅

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Nitrogen lone pair electrons on 2-acetyl-1-pyrroline

10yr ⋅

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Enantiomerically pure ketone reaction under acidic conditions gives 1:1 mixture of diastereoisomers?

9yr ⋅

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Product of Reaction?

10yr ⋅

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How much Carbon Dioxide would be required to displace enough oxygen to prevent ignition?

10yr ⋅

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Aldol of 7-oxo octanal

10yr ⋅

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Number of bonds in a Lewis Structure

12yr ⋅

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Diels Alder reaction with maleic anhydride. Reactivity of different dienes

11yr ⋅

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Combustion of thiazole

11yr ⋅

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Does it matter which end of a chain one sets to be 1 when drawing the structure of organic compounds?

11yr ⋅

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Which of the these SN1 solvolysis of two alkenyl bromides reactions is faster?

11yr ⋅

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Memorizing polyatomic ions? Using Periodic Table

9yr ⋅

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How would you Synthesise LY-293,284?

12yr ⋅

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Where does the 9th electron go in a N=O bond?

11yr ⋅

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Electron Configuration of Tellurium

11yr ⋅

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Reduction of terephthalic acid to alcohol (or phenol?)

11yr ⋅

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Naming functional groups in a molecule?

9yr ⋅

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Nomenclature for stereoisomer example possible wrong?

11yr ⋅

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Why is this chair conformation the most stable and which leaving group is best?

11yr ⋅

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How can it be certain that some bonds are 180 degrees?

11yr ⋅

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Oxidation of Carbons

9yr ⋅

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What are ketoximes?

11yr ⋅

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R configuration for cysteine

9yr ⋅

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Interpretation of the following mass spectrum

11yr ⋅

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Why do puffed rice stick to wet hands?

11yr ⋅

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Activation energy clarification

11yr ⋅

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Balancing chemical systems - searching and sorting preliminary information

11yr ⋅

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Is this the correct relative Brønsted acidity in these four acids?

12yr ⋅

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How to check for geometrical isomerism in cyclic compounds?

11yr ⋅

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does Sodium persulfate evaporate at room temperature

11yr ⋅

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What's the name of this electrolysis device?

12yr ⋅

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Are words on my T-shirt removable?

12yr ⋅

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Are dicarbonyl amides stable in water?

11yr ⋅

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What is the product of a Dieckmann condensation of dimethyl adipate?

9yr ⋅

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Entropy and enthalpy change on mixing liquids

11yr ⋅

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Acid catalyzed hydrolysis of ester

9yr ⋅

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Why does sodium require energy to ionize?

11yr ⋅

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Is the correct configuration assigned to the given pair of geometrical isomers of 1,2-dichlorocyclopropane?

9yr ⋅

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What is the E/Z configuration of cyclic compounds?

9yr ⋅

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What does this scale mean?

11yr ⋅

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Is the activation barrier of a reaction related to the free energy or heat of formation of its reactants?

11yr ⋅

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Thermodynamic Cycle

11yr ⋅

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Difference between the terms autocatalysis and (branching) chain reaction

12yr ⋅

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Cyclohexane to cyclopentane synthesis

10yr ⋅

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Best representation of hydrogen bond in solid HF?

10yr ⋅

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Overlapping oxygens in crystal structure -- what's going on?

12yr ⋅

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How to interpret a luminescence intensity vs wavelength graph?

10yr ⋅

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Electrophilic Substitution

12yr ⋅

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Potassium permanganate oxidation of sugars

10yr ⋅

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Reduction of acetaldehyde from rectus and sinister faces

10yr ⋅

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Hydrolysis of cyclic acetal

10yr ⋅

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What functional groups are subsets of the Alkoxy group?

10yr ⋅

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Why is C4 of butynone electrophilic?

10yr ⋅

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Can bromide ion ever act like a base?

12yr ⋅

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What will be the Ozonolysis product?

12yr ⋅

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Sulfur Trioxide - Ionic Character

10yr ⋅

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Mechanism of reduction by elemental sodium

10yr ⋅

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Flipping a molecule vs. mirror behind compound

10yr ⋅

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Rationalizing Strength of Binary Halogen Acids with MO Theory

10yr ⋅

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Endothermicity of Reaction

10yr ⋅

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Drawing (R)-1,1,2-trimethylcyclohexane

10yr ⋅

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Energy Diagram for Propane

10yr ⋅

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Resonance in Cyclohexenone

10yr ⋅

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Mechanism of sulfur trioxide reaction with water to make sulfuric acid

10yr ⋅

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Halogenation of alcohols in the presence of ZnCl2

11yr ⋅

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Is chloronitrobenzene and nitrochlorobenzene same?

8yr ⋅

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Stereochemistry of hydrogenation with Raney nickel

9yr ⋅

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