MChem Master of Chemistry Study Guide 2026
Everything you need to pass the MChem Master of Chemistry exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 MChem Master of Chemistry Exam Format at a Glance
📚 MChem Master of Chemistry Topics to Study (21)
✍️ Sample MChem Master of Chemistry Questions & Answers
1. Spectrogram produced by spectroscopic measurements is the outcome of the
In absorption spectroscopy, a spectrogram (or spectrum) is generated by measuring the amount of light absorbed by a sample across different wavelengths. The resulting graph shows peaks and troughs that correspond to specific wavelengths of radiation that are absorbed by the sample's molecules, providing unique information about its chemical composition and structure.
2. Which of the following processes employs lead tetraacetate to dissolve a glycol's carbon-carbon bond?
The Criegee oxidation is a specific organic reaction that employs lead tetraacetate (Pb(OAc)4) to selectively cleave the carbon-carbon bond of vicinal diols (glycols). This oxidative cleavage typically results in the formation of aldehydes or ketones. It is a valuable method in organic synthesis for breaking C-C bonds in a controlled manner.
3. Pick substances that can be converted into chelating agents.
Chelating agents are ligands that can form multiple coordinate bonds with a single metal ion, creating a stable, ring-like structure known as a chelate. Ligands are categorized by their denticity, which refers to the number of donor atoms they use to bind to the metal center. Bidentate (two donor atoms), tridentate (three donor atoms), and tetradentate (four donor atoms) ligands are all capable of acting as effective chelating agents.
4. Which of the following doesn't fall within the acid or basic category?
KCl (potassium chloride) is a salt formed from the reaction of a strong acid (HCl) and a strong base (KOH). When dissolved in water, it dissociates into K+ and Cl- ions, neither of which significantly hydrolyzes water to produce H+ or OH- ions. Therefore, an aqueous solution of KCl is neutral, unlike HCl (strong acid), CH3COOH (weak acid), or CH3OH (alcohol, which is generally considered neutral but can act as a very weak acid/base).
5. It is referred to as the solute concentration per unit volume.
Concentration is a general quantitative term used to express the amount of solute present in a given amount of solvent or total solution. It quantifies how much of a substance is dissolved or dispersed in another substance, typically expressed as mass per unit volume or moles per unit volume. While ppm and molality are specific units of concentration, 'concentration' is the overarching concept.
6. Which medication from the list below is not regarded as a lead molecule's fragmented analog?
Fragmentation is a drug design strategy where a lead molecule is broken down into smaller, simpler components to identify essential pharmacophores or reduce complexity. Codeine, Metazocine, and Levorphanol are structurally related to morphine and can be considered as derivatives or analogs that retain key structural features. Meperidine, while an opioid, has a significantly different and simpler chemical structure that was developed based on a different structural hypothesis, making it less of a direct 'fragmented analog' of morphine compared to the others.