___________________________________________________________________________ 1. Which of these compounds is most likely to be ionic? A. KF B. CCl4 C. CS2 D. CO2 E. ICl 2. Which of these compounds is most likely to be ionic? A. NCl3 B. BaCl2 C. CO D. SO2 E. SF4 3. Which of these compounds is most likely to be covalent? A. Rb2S B. SrCl2 C. CS2 D. CaO E. MgI2 4. Which of these compounds is most likely to be covalent? A. CsOH B. NF3 C. Sr(NO3)2 D. CaO E. LiF 5.
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Q.3. Write a balanced chemical equation with state symbols for the following chemical reactions: (i) Solution of barium chloride and sodium sulphate in water to give insoluble barium sulphate and the solution of sodium chloride. Ans:- (i) BaCl2 (aq) + Na2SO4 (aq) →BaSO4 (s) + 2NaCl (aq) (ii) Sodium hydroxide solution (in water) react with hydrochloric acid solution (in water) to produce sodium chloride and water. Ans. (ii) NaOH (aq) + HCl (aq) → NaCl (aq) + H2O (liq) Q.4. A reaction
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Oxidation of an Alcohol: Oxidizing Methoxybenzyl Alcohol to Methoxybenzaldehyde Using Phase-Transfer Catalysis PURPOSE OF THE EXPERIMENT Oxidize methoxybenzyl alcohol to methoxybenzaldehyde‚ using sodium hypochlorite as the oxidizing agent and tetrabutylammonium hydrogen sulfate as the phase-transfer catalyst. Monitor the progress of the reaction by thin-layer chromatography. BACKGROUND REQUIRED You should be familiar with extraction‚ evaporation‚ and thin-layer chromatography techniques
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SNC 2DO EXAM REVIEW January 2014 The exam is based on the entire semesters work. Chemistry 1. Label the following on a periodic table: a) Alkali metals b) Alkaline earth metals c) Halogens d) Noble gases 2. Indicate the metals‚ non-metals and metalloids. -38100431803. Show the trends for reactivity and atomic radius. 4. Which of the following elements has the largest atomic radius? Why? a) fluorine b) oxygen c) nitrogen d) calcium Calcium has the largest atomic radius
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Topic 11a – Group 7‚ the Halogens Revision Notes 1) Trends in physical properties of the elements • At room temperature‚ Cl2 is a pale green gas‚ Br2 is a brown liquid‚ I2 is a blue-black solid. • In Group 7‚ boiling point increases down the group because the molecules have more electrons and‚ therefore‚ stronger van der Waal’s forces which require more energy to overcome them • Electronegativity is the ability of an atom to attract the electrons in a covalent bond • Down
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bDATES PERFORMED: JANUARY 8‚ 2013 CHEMICAL EQUILIBRIUM D.M. TAN1 AND P.B. ALEGRO2 1DEPARTMENT OF MINING‚ METALLURGICAL‚ AND MATERIALS ENGINEERING‚ COLLEGE OF ENGINEERING 2 INSTITUTE OF CHEMISTRY‚ COLLEGE OF SCIENCE UNIVERSITY OF THE PHILIPPINES‚ DILIMAN QUEZON CITY‚ PHILIPPINES RECEIVED JANUARY 15‚ 2013 RESULTS AND DISCUSSION A. Iron- Silver Equilibrium The first part of the experimentation focuses in the iron-silver system. Silver nitrate (AgNO3) was added to ferrous
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Solution Review Complete all questions in this package. Be careful to use correct significant figures and units for any calculation problems. For all chemical equations use phase subscripts. Concentration 1. Calculate the concentration of the solution formed when 23.61 g of sodium phosphate is dissolved in 475.0 cm3 of water. 2. What volume of water is needed to dissolve 85.8 g of silver nitrate to make a 2.650 M solution? 3. What mass of magnesium sulphate is needed to make 1500
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CHAPTER 4 REVISION 1. How many moles of silver atoms are in 0.780 grams of silver? a) 0.78 moles b) 0.00723 moles c) 84.2 moles d) 0.522 moles 2. What is the molar mass of Mg(BrO4)2? a) 312 g mol-1 b) 232 g mol-1 c) 168.2 g mol-1 d) 477 g mol-1 3. What mass of the compound FeWO4 contains 50.0 grams of tungsten (atomic symbol W‚ atomic number = 74)? a) 30.0 g FeWO4 b) 304 g FeWO4 c) 82.6 g FeWO4 d) 188 g FeWO4 d) FeSO4 4. A compound contains 20.2%
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Determining the Limiting Reactant and Percent Yield in a Precipitate Reaction (SMG 6D) AP Chemistry One example of a double replacement (metathesis) reaction is the mixing of two solutions resulting in the formation of a precipitate. In solution chemistry‚ the term precipitate is used to describe a solid that forms when a positive ion (cation) and a negative ion (anion) are strongly attracted to one another. In this experiment‚ a precipitation reaction will be studied. Stoichiometry
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Chemistry 12 Unit 3 - Solubility of Ionic Substances Chemistry 12 Review Sheet on Unit 3 Solubility of Ionic Substances 1. Identify each of the following as ionic or molecular substances: a) NaCl(aq) ........................................................___________________________________ b) CH 3COOH(aq) ..........................................___________________________________ c) CCl4(l) ...................................................___________________________________ d) HNO3(aq)
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