1. Colloids and Ions

  2. What is the difference between an activated complex, an intermediate and a transition state?
  3. Reaction between CHCl3 and Br2
  4. Product of primary amine and acid anhydride
  5. When does esterification dominate?
  6. Mechanism of hydrogen evolution on metal-oxide electrodes

  7. Why secondary alkyl groups are more prone to shifting than primary?
  8. How does epoxide ring opening occur using DIBAL-H?
  9. Insertion vs epoxide formation
  10. Oxidation of lactols to lactones?

  11. Can carbanion rearrange to attain more stability?
  12. Difference between intermediates and transition states

  13. Why can hydroxide not be used to synthesise ethanol from ethyl amine?
  14. How many different alkyl chlorides result from C4H10 and chlorine?

  15. Lemieux-Johnson oxidation on cycles
  16. Does a cationic 1,3-triphosphinane react with a methyl cation?

  17. Neighbouring group participation with and without retention of configuration in nucleophilic substitution of 2,6-dichloro-9-thiabicyclo[3.3.1]nonane

  18. Stereochemistry of product in Grignard-Gilman addition reaction
  19. What are the basic conditions for a carbocation to rearrange into a stable carbocation?
  20. How do Gilman reagents open epoxides?

  21. At what condition N2 and H2 don't react each other?

  22. provide reaction mechanism for this reaction

  23. Anomalous Friedel–Crafts acylation with pivaloyl chloride

  24. Friedel–Crafts alkylation of benzene with propyl chloride
  25. Nonsubstituted Cycloalkene HBr Reaction
  26. How to explain the selectivity between methanol and methanethiol in an SN1 reaction with an halogenated hydrocarbon?
  27. Auto-catalysis Mechanism
  28. What happens when acetic acid is added after hydroboration of an alkene?

  29. Reactions in the presence of sunlight
  30. Differentiating between Prins reaction / ene reaction experimentally
  31. Is water a better nucleophile than bromide?

  32. What are good examples of highly viscous acids?

  33. Why is free radical chlorination exothermic whereas bromination is endothermic?
  34. Synthetic Silica Sand
  35. What would be the correct mechanism for hydration of ethene?

  36. Can substituted acetone undergo Cannizzaro reaction?

  37. Saytzeff and beta elimination
  38. Epoxide ring opening via decarboxylation
  39. Condensation Reaction

  40. What's the mechanism of the reaction of (E)-methyl 3-(furan-2-yl)acrylate in acidic methanol?
  41. Reaction of bicyclic diol with periodic acid

  42. Mechanism of carboxylic acid and amide dehydration with phosphorus pentoxide

  43. Elimination mechanism in alkenes

  44. Reaction involving markovnikov's rule

  45. How is "dietary cholesterol" processed in a human body?

  46. Reaction between NaOH and CO2
  47. Why are elimination reactions in organic chemistry known as beta eliminations?

  48. Thermochromic paint that ranges from 50° to 90° Celsius
  49. Iron chemistry: acetates for ebonizing wood
  50. Why does water attack the more substituted carbon in oxymercuration?

  51. How does Rosuvastatin 5 S-lactone form in human body?
  52. Pericyclic Reaction Mechanism
  53. Synthesis of cycloserine: What is the mechanism of this step?

  54. Which mechanism do ethers follow when reacting with hydrogen halides?

  55. Reaction of unsymmetrical ethers with hydrogen halides
  56. Sulphonation of alkanes
  57. What is the mechanism of the reaction between hexane-2,5-dione and nitrous acid?

  58. Reaction of alcohols with PCl5 and PCl3
  59. Oxidation by DMSO

  60. Why do we need sulfuric acid in creating alkyl bromide and not in creating alkyl iodide from alcohol and hydrogen halide?

  61. Why is the nitrile group not hydrolyzed as well during hydrolysis of imine in Thorpe reaction?
  62. Why is a Grignard reagent not protonated by chloramine?

  63. On the mechanism of the nitrogen-removal step of the Wharton olefin synthesis

  64. Steric factors greater than 1 or less than 0?

  65. Reaction of hydrazine and hydroxylamines with carboxylic acids

  66. How will this reaction proceed?

  67. Why concentrated sulfuric acid for dehydration and dilute for hydration?

  68. Number of intermediates and transition states in hydration of given alkene

  69. What does a fractional order of reaction mean for the mechanism?

  70. What stops intermediates of alcohol hydration and dehydration reacting in the same way?

  71. Fermentation in beer (reaction schemes)?

  72. How to Predict the Formation of Racemic Mixtures or Single Products from a Diels Alder Reaction?

  73. How does the inductive effect, explain the reactivity of tertiary alcohols with halogen acids?

  74. how do I obtain exclusively the ortho nitration product from nitration?

  75. Carbocation Formation in Electrophilic Addition of Hydrogen Halides to Alkenes
  76. Which of the compounds give the same SN1 and SN2 products?
  77. What is the mechanism of the Clemmensen reduction?

  78. What is the unit of constant rate in chemical master equation?

  79. How to determine whether inversion takes place?
  80. Comparing SN2 reaction rate for two molecules
  81. How do I arrive at the α-trimethylsilyloxy ketone from an unmodified ketone using TMSCl, triethylamine and mCPBA?

  82. Given advancements of computational power an machine learning, how is it still not possible to predict products from chemical reactions?
  83. synthesis of an unsaturated lactone
  84. Gattermann-Koch Reaction with Phenol Substrates
  85. How can we balance one-half of an oxygen molecule, or any other diatomic, in a chemical reaction?

  86. What is the reaction mechanism of nitrogen leaving from diazo compounds?

  87. Theoretically, How much HNO3 should we add to 0.21gr of Magnesium?
  88. Which base accepts the proton abstracted from water in propyne hydration?

  89. Are compounds containing active methylene groups positive for the haloform test?

  90. How can an SN1 reaction give non-racemic products?
  91. What is the mechanism of the reaction of 2-chloropyridin-3-amine with cyclohexanone?

  92. In the elementary steps of a reaction, why do we assume that the coefficients of a reactant correspond to its order?
  93. Show proposed mechanism is consistent with the experimental rate law

  94. How to balance this equation?

  95. How can molecularity be the order of the rate determining step?

  96. How is it that the equilibrium constant does not depend on the mechanism?
  97. Mechanism for decarboxylation
  98. Nucleophilic substitution with chloroethane: hydrogen cyanide vs. potassium cyanide

  99. Mixing isopropyl alcohol and propylene glycol

  100. Chemical oscillators that behave like a double pendulum