A) B) C) D) E) 5. The IUPAC name for dimethyl ketone is A) 2-propanal. B) 3-propanal. C) 2-propanone. D) 1-propanone.
The ultimate goal of this experiment is to synthesize benzocaine from p-nitrotoluene. In order to achieve this, the following multiple steps will be employed: 1. The reduction of p-nitrotoluene to create p-methylaniline. The reducing agent for this phase is a metal –acid combination, tin and hydrochloric acid. 2.
What is the Kb of its conjugate base, CN–? A 9.21 B 10–9.21 C 7 D 4.79 E 10–4.79 √ 1 Tutorial 5 - Answers Marks • The molecular structure of nicotine, the addictive component of tobacco, is shown right. 8 List the types of intermolecular interactions that each of the following sites on nicotine would be involved in when it is dissolved in water. A Dispersion forces, dipole-dipole, H-bond acceptor B Dispersion forces, dipole-dipole, H-bond acceptor Provide the requested information for each of the indicated atoms in nicotine. Atom Arrangement (shape) of the electron pairs around the atom Hybridisation of the atom Geometry around the atom N-1 Trigonal planar sp2 Angular/bent/V-shaped N-2 Tetrahedron sp3 Trigonal pyramidal C-3 Trigonal planar sp2 Trigonal planar C-4 Tetrahedron sp3 Tetrahedron The pKa of (the conjugate acid form at) N-1 is 3.12 and the pKa of (the conjugate acid form at) N-2 is 8.02.
The mass of the products in a chemical reaction depends on the amount of A. excess reactant B. limiting reactant C. oxidizing agent D. reducing subtannce 14. What is the formula mass of CaCl2? (Ca = 40.1, Cl = 35.45) A. 75.6 amu B. 110.9 amu C. 111.1 amu D. 756 amu 15.
Identify the condensed formula of the following structure: A) (CH3)2CHCHClCH(CH3)2 B) CH3CH(CH3)CHClCH(CH3)2 Ans: C C) D) (CH3)2CHCHClC(CH3)3 (CH3)3CCHClCH(CH3)3 9. What is the chemical formula of the following carbon skeleton diagram? A) C8H14 Ans: C B) C8H16 C) C8H18 D) C8H20 10. How many hydrogen atoms are there on carbon atoms 1 and 2, respectively, in the structure below? A) 4, 1 B) 4, 0 Ans: D C) 3, 1 D) 3, 0 11.
Zinc Chloride acts as the catalyst in the reaction. In some condition, heat supply is needed in the reaction. Alkyl halide can be prepared from alcohol by reacting them with a hydrogen halide, HX (X=Cl,Br, or I). The mechanism of acid catalyzed substitution of alcohols are termed SN1 and SN2, where “S” stands for substitution while sub-“N” stands for nucleophilic, and the number “1” and “2” is described as first order and second order respectively. The “1” or “2” is also represent the reaction is unimolecular or bimolecular reaction.
From these equilibrium concentrations, the equilibrium constant for the reaction can be determined. The purpose of this experiment is to determine the equilibrium constant for the following hydrolysis of an ester reaction: CH3COOCH2CH3 (aq) + H2O (l) CH3CH2OH (aq) + CH3COOH (aq) Ethyl Acetate Water Ethanol Acetic Acid (EtAc) (EtOH) (HAc) The equilibrium constant, Kc, for the reaction will have the following expression: Several reaction mixtures will be prepared with different initial amounts of ethyl
An Investigation to determine the reaction kinetics of the Iodine-Propanone reaction The Aim for this investigation to use the reaction between Iodine and Propanone, with an acid catalyst, to determine the reaction kinetics of each of the reactants and find out which order each of the reactants is and to develop a rate equation. This will be done by changing the concentrations of the reactants and reacting them in a colorimeter and measuring the colour change over time by measuring the percentage of light absorbed over a constant period of time. Equation- CH3COCH3(aq) + I2(aq) → CH3COCH2I(aq) + H+(aq) + I-(aq) Source- http://www.chemtopics.com/unit09/iodina.pdf This is a substitution reaction because a Hydrogen atom gets substituted for an Iodine atom. The role of the acid catalyst is to speed up the otherwise slow rate of reaction. Nuc: + R-LG → R-Nuc + LG: The electron pair (:) from the nucleophile (Nuc) attacks the substrate (R-LG) forming a new bond, while the leaving group (LG) departs with an electron pair.
Halogens Aim: To find the difference in appearance, reactivity and solubility of Halogen elements. Materials: * Chlorine * Bromine * Iodine * Chlorine solution in water * Bromine solution in water * Iodine solution in water * Test-tubes * Rubber bungs * Potassium chloride solution * Potassium bromide solution * Potassium iodide solution * Silver nitrate solution * Cyclohexane Method: Experiment 1- Appearances and solubilities of halogen elements 1. Observe the elements: Iodine, Bromine and Chlorine at room temperature and record their physical state and color. 2. Boil or sublimate (if necessary) to observe each element in gaseous state, record color of vapor.
In this experiment we will perform a Grignard addition to an ester. First we will form the Grignard reagent from magnesium and bromobenzene and then we will add it to methyl benzoate to produce triphenylcarbinol (also called triphenylmethanol). Since we are using an ester as our electrophile in this reaction, the nucleophilic Grignard reagent, prepared from the bromobenzene and magnesium, will add to the carbonyl two times to give the triphenyl adduct that on treatment with aqueous acid gives the free alcohol. Method : Preparation of triphenylcarbinol through Grignard reaction involves three steps. The first step is preparation of Grignard reagent which has a formula of RMgX,