Fractional distillation Study guides, Class notes & Summaries

This is the entire section of the fifth lab for CLAB 267, including the purpose, table of chemical properties, procedure, chemical reactions, data/calculations, and the discussion of results.

Purification techniques (discussed so far) - correct answers Extraction Recrystallization Simple/fractional distillation Analysis techniques (discussed so far) - correct answers Mp NMR TLC When to use extraction - correct answers Want to separate compounds based on solubility and density gradient, and you have two immiscible liquids. Why could hexane be used in an extraction with water, but not acetone? - correct answers Acetone is water soluble and hexane isn't; extraction require...

RRT EXAM Questions with 100% Correct Answers Verified | Updated 2024/2025 therapeutic gases Air, Oxygen, Heliox (Helium/oxygen) Carbon Dioxide, Nitric Oxide Laboratory gases Nitrogen, helium, and carbon dioxide Anesthetic gases nitrous oxide Fire Risk Classifications Non-flammable (do not burn); Oxidizing (non-flammable but supportive of combustion); Flammable (burns readily, potentially explosive) Characteristics of o2 Odorless, tasteless, colorless Non-flammable, b...

ction A and 25 minutes on Section B. 2 Section A Answer all questions in this section. 0 1This question is about the analysis of organic compounds. For each pair of compounds in Questions 01.1 and 01.2, give a reagent (or combination of reagents) that could be added separately to each compound in a single reaction to distinguish between them. State what is observed in each case. 0 1 . 1CH3CH2CH2CHO and CH3CH2CH(OH)CH3 [3 marks] Reagent(s) Observation with CH3CH2CH2CHO Observation ...

GCSE COMBINED SCIENCE: TRILOGY 8464/C/2F Chemistry Paper 2F Version: 1.0 Final *JUN238464C2F01* IB/M/Jun23/E5 8464/C/2F For Examiner’s Use Question Mark 1 2 3 4 5 6 TOTAL Tuesday 13 June 2023 Morning Time allowed: 1 hour 15 minutes Materials For this paper you must have: • a ruler • a scientific calculator • the periodic table (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at ...

RRT EXAM Questions with 100% Correct Answers Verified | Updated 2024/2025 therapeutic gases Air, Oxygen, Heliox (Helium/oxygen) Carbon Dioxide, Nitric Oxide Laboratory gases Nitrogen, helium, and carbon dioxide Anesthetic gases nitrous oxide Fire Risk Classifications Non-flammable (do not burn); Oxidizing (non-flammable but supportive of combustion); Flammable (burns readily, potentially explosive) Characteristics of o2 Odorless, tasteless, colorless Non-flammable, b...

10 - LCAs, water with complete solutions What does the life cycle assessment (LCA) of product do? - correct answer Assesses the environmental impact of a product during each stage of its production process What is the process of the production of a product? - correct answer 1. Getting raw materials 2. Manufacture and packaging 3. Using the product 4. Disposing the product What are the environmental impacts of getting raw materials? - correct answer 1. damage the local environment (mi...

Recapitalization a technique used to purify organic solid compounds with the goal to dissolve and subsequently crystallize a pure substance from the solution. What are the four characteristics of a good solvent? -Target must be soluble in high temp with impurities soluble at room temp or at high temps -Must be chemically inert (non-reactive) -Low boiling point, or highly volatile What are the 5 basic steps to Recrystallization -Choose suitable solvent -Dissolve the impure mixture in the...

AQA Chemistry - Organic Chemistry 2023 Test Questions Answers How is crude oil formed? - ANSWER Over millions of years from the fossilised remains of plankton Where is crude oil found? - ANSWER In the porous rocks in the Earth's crust Is crude oil renewable or non-renewable? - ANSWER Non-renewable What is crude oil made up of? - ANSWER Hydrocarbons What gives hydrocarbon molecules varying properties? - ANSWER They vary in siz...

Edexcel iGCSE Chemistry, question and answer with rated solution Experiment for Diffusion? 1) HCl placed at one end of the test tube, ammonia solution at the other. 2) Where they meet, a ring of Ammonium Chloride appears. 3) The diagram shows that the ammonia is closer to the ring, showing that ammonia must have travelled faster, showing it's a lighter gas. Experiment for Dilution? 1) Put a coloured substance in a solvent e.g food colouring in water. 2) Over the time, the colour le...