Natural & Applied Sciences

Natural & Applied Sciences Research Papers/Topics

CHEM 110 Module 3 Organic Chemistry

Introduction ................................................................... 1 Bonding in carbon compounds.............................................. 7 Alkanes .......................................................................16 Alkenes and Alkynes........................................................31 Aromatic compounds........................................................49 Alkyl halides....................................................................61 Alcohols ...........

CHM 235: Experiment 10 — Qualitative Analysis

Chemical tests (a) Water solubility and litmus tests (b) DNP test (c) Chromic acid test (d) Permanganate test (e) Beilstein test Experimental procedure

CHM 235 - Tartaric Acid

Erythrose and threose Tartaric acid; meso form Configuration and conformation Compounds with three or more asymmetric carbon atoms D, L nomenclature of sugars

CHM 235 - General Organic Chemistry

Purification of Organic Compounds Qualitative Analysis Detection of Nitrogen Detection of Sulphur Detection of Carbon and Hydrogen Halogens Phosphorus Oxygen Empirical and Molecular Formular Molecular Shape Viscosity

CHM 235 - Full and Updated CBT Past Questions Collated According to Syllabus

1. Two isomeric forms of a saturated hydrocarbon (a) have the same structure. (b) have different compositions of elements. (c) have the same molecular formula. (d) have a different content of the isotopes of hydrogen. (e) react vigorously with one another. 2. Which of the following hydrocarbons does not have isomers? (a) C7H16 (b) C6H14 (c) C5H10 (d) C4H8 (e) C3H8 3. The name of the alkane isomer of cis-3-hexene is: (a) 2-methylpentane (b) 3-methylpentane (c) n-hexane (d) 2,3-dimethylbutane (...

CHM 235 Past Question-1

There are 35 questions in all which you are required to answer in 25 minutes. All questions carry equal marks 1. The Diels-Alder product of 1-vinyl and cyclohexene has the structure 2. In a typical aromatic reaction, benzene act as base and therefore as a source of --------- Electrons Hydroxyl ions Nuclear particles Protons

CHM 203-Organic Chemistry II

MODULE 1 Unit 1 Effect of Molecular Architecture on Physical Properties………………………….……….. 1 Unit 2 Structure-Reactivity Relationship…………….……… 14 Unit 3 Aromatic Hydrocarbons……………………….……... 52 Unit 4 Halogen Derivatives of Aromatic Hydrocarbons……. 94

CHM 235- Chapter 5 (Stereochemistry: Chiral Molecules)

Isomerism: Constitutional Isomers and Stereoisomers Two types of stereoisomers Enantiomers and Chiral Molecules A chiral molecule: 2-butanol Chiral molecules and stereogenic centers Tests for achirality Plane of Symmetry = achiral Nomenclature of Enantiomers: The R,S System Properties of Enantiomers Specific Rotation – a property of an enantiomer Specific rotation of enantiomers Enantiomeric Excess The Synthesis of Chiral Molecules Enantioselective Synthesis

CHM 235: Organic Qualitative Analysis

IDENTIFICATION OF UNKNOWNS Safety Precautions with Unknowns Purity of an Unknown Completion of the Analysis PHYSICAL PROPERTIES Physical Appearance Melting Point or Boiling Point Compounds That Melt Near Room Temperature CLASSIFICATION BY SOLUBILITY Procedure for Solubility Tests INFRARED, NUCLEAR MAGNETIC RESONANCE, AND MASS SPECTROSCOPIC ANALYSIS NMR Spectrum Mass Spectrum IR Spectrum Using Spectroscopic Data to Determine the Structure of an Unknown Compound CLASSIFICATION TESTS FOR FUNCTIO...

Chm-235-resonance-note (1)

Delocalization and Conjugation  Curved Arrow "Pushing" Major, Minor (and Unreasonable) Resonance Contributors Resonance and Hybridization Minor Resonance Contributors "Guidelines" for Resonance Resonance and Stability

CHM 235- Nucleophilic Aromatic Substitution

Nucleophilic Aromatic Substitution by Addition–Elimination Nucleophilic Aromatic Substitution by Elimination–Addition: Benzyne

CHM235 PQ

There are 35 questions in all which you are required to answer in 25 minutes. All questions carry equal marks 1. The Diels-Alder product of 1-vinyl and cyclohexene has the structure 2. In a typical aromatic reaction, benzene act as base and therefore as a source of --------- Electrons Hydroxyl ions Nuclear particles Protons

CHM 235 STEREOCHEMISTRY

Stereoisomers - Geometric isomers - Optical isomers - Chirality - Relative and absolute configuration

CHM 235 questions (The Covalent Bond)

The Covalent Bond 1. The hybridization of the central carbon in CH3C≡N and the bond angle CCN are a. sp 2, 180°. b. sp, 180°. c. sp 2, 120°. d. sp 3, 109°. 2. Which of the following statements about an sp hybridized carbon is FALSE? a. It is divalent. b. It forms bonds that are linear. c. It has two p orbitals. d. It always forms triple bonds to carbon.

CHM 235 PAST QUESTION 2012

What is the formal charge on the indicated atom in each of the following structures? All lone pairs are shown.


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