Mona Vaidya April 8‚ 2014 Professor Diaz Chem 317 Section: 20711 Lab Experiment: Nitration of Bromobenzene Introduction: The chemical reaction of nitration consists of a nitro group being added to or substituted in a molecule. Nitration can basically be carried out by a mixture of concentrated nitric acid and sulfuric acid; this mixture is useful to obtain the active nitronium ion. Electrophilic aromatic substitution is a method used when a functional group is needed to be substituted on
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oxide which creates a bluish white. When Bismuth is red heat‚ near melting point‚ and put into water‚ the water quickly cools down the Bismuth without drastically raising in temperature. When bismuth reacts with Halogens‚ such as fluorine‚ chlorine bromine‚ iodine‚ and astatine‚ they create trihalides for
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|WEEK |LEARNING OBJECTIVES |LEARNING OUTCOMES |ACTIVITIES |REMARKS | |1 |FORM 4 ORIENTATION | | |4/1 – 6/1 |
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N10/4/CHEMI/SP2/ENG/TZ0/XX 88106105 CHEMISTRY STANDARD LEVEL PAPER 2 Thursday 11 November 2010 (afternoon) Candidate session number 0 1 hour 15 minutes 0 INSTRUCTIONS TO CANDIDATES • • • • Write your session number in the boxes above. Do not open this examination paper until instructed to do so. Section A: answer all of Section A in the spaces provided. Section B: answer one question from Section B. Write your answers on answer sheets. Write your session number
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Chemistry : Important Questions For CBSE Class XII ( Haloalkanes and Haloarenes) (Q.1) Choose the incorrect statement about the benzyl chloride: ( 1 mark ) (a) It is less reactive than alkyl halides. (b) It can be oxidized to benzaldehyde by boiling with copper nitrate solution. (c) It is a lachrymatory liquid and answers beilstein’s test. (d) It gives a white precipitate with alcoholic silver nitrate (Q.2) Dry ether The reaction RX + 2Na + RX _______________? R-R + 2NaXis called. ( 1 mark
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Science Final Exam Review Chemistry Terms: Pure Substance: a type of matter that consists of only one type of particle Compound: a pure substance that is composed of two or more different elements that are chemically joined Element: a pure substance that cannot be broken down by any physical or chemical means Mixture: contains more than one type of particle Heterogeneous Mixture: a mixture in which you can distinguish between different types of matter; also called a mechanical mixture Homogeneous
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Lecture # 1 Organic Chemistry- 1. It is a science that deals with the study of Carbon compounds but not all compounds containing under organic compounds. Non-Organic Compounds a. CO- Carbon monoxide b. CO2- Carbon dioxide c. CO3- Carbonates d. HCO3- Hydrogen carbonates e. CN- -Cyanides 2. There are over millions of compounds and inorganic is approximately 100‚000. 3. A science that deals with matter obtained from natural or living sources. 4. Study of Carbon Compounds
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order of their atomic masses‚ the atomic mass of the middle element will roughly be the average of the atomic masses of the other two elements Other metals Non-metals Element Atomic mass Element Atomic mass Calcium 40 Chlorine 35.5 Strontium 88 Bromine 80 Barium 137 Iodine 127 Average mass of calcium and barium = = 88.5 Hence‚ Dobereiner was able to identify only three triads from the elements known at that time as shown Li Ca Cl Na Sr Br K Ba I Table 1: Dobereiner’s triads Limitations
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Reactivity of Halide Ions Purpose: There are four halide salts used in this experiment that are found in the human body. Sodium fluoride is poisonous‚ but has been traced to be beneficial to humans in the prevention of tooth decay. Sodium chloride is added to many of our foods to increase flavor. Sodium chloride is important for many life processes‚ but too much intake is linked to high blood pressure. Sodium bromide is distributed throughout body tissues. Sodium iodine controls cell growth. The
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Writing Half Reaction and Net Ionic Equation Going back to our first concept or topic‚ we’ve learn how to identify the Oxidizing and Reducing agent and the Oxidation as well as the Reduction. In this part of the Redox reaction or in this step‚ it is very important that you already know the Oxidizing and Reducing agent for us to find the half reaction. In this step or part‚ we will also learn how to balance using the addition of electrons in both sides if necessary. After this step we can now write
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