Unit 18 B Study Guide 1. Find the solubility (in mol/L) of lead(II) chloride (PbCl2) at 25oC. Ksp = 1.62e–5. A) 1.59e–2 B) 2.53e–2 C) 6.64e–17 D) 2.01e–3 E) 2.01e–2 2. The two salts AgX and AgY have very similar solubilities in water. It is known that the salt AgX is much more soluble in acid than is AgY. What can be said about the relative strengths of the acids HX and HY? A) Nothing. B) HY is stronger than HX. C) HX is stronger than HY. D) The acids have equal strengths. E)
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bromine are both non-metals (both negative in compounds) and both are used for disinfecting and bleaching. What will happen if chlorine is added to a solution containing bromide ions? What will happen if bromine is added to a solution containing chloride ions? Permanganate ions (MnO4-) react with iron(II) ions (Fe2+) in acid solution. What about the ratio in which these ions react? Does the balanced equation
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Experiment Separation of Organic Compounds by Acid-Base Extraction Techniques 5 A commonly used method of separating a mixture of organic compounds is known as liquid-liquid extraction. Most reactions of organic compounds require extraction at some stage of product purification. In this experiment you will use extraction techniques to separate a mixture of an organic acid‚ a base‚ and a neutral compound. Organic acids and bases can be separated from each other and from neutral compounds
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GCSE CHEMISTRY High Demand Questions THE PERIODIC TABLE QUESTIONSHEET 1 The boxes represent particles of different gases. One box shows the particles of elements in group 0 (group 8). A (a) (i) B C D What name is given to group 0 (8) elements? (ii) Name two elements from group 0. ......................................................................................................................................................................... [2] (b) (i) Which box
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Confirmatory Tests for Cations & Anions prepared by alex teoh / Update: 29 Dec 2004-2205 h / 1st pub: 7 Sep 2001 @ CHIJ-St Joseph’s Convent Test for CATions * All cations must be present in aqueous states before tests can be conducted.. CATion ammonium zinc Reaction with aqueous Sodium Hydroxide NO ppt. Ammonia gas produced on warming. White ppt. [y] Soluble in excess aq. NaOH to form a colorless solution. [z] Zn2+ + 2OH- Zn(OH)2 (white ppt) Zn(OH)2 + 2OH- [Zn(OH)4]2- (aq) White ppt
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Inorganic Nomenclature I. Compound Type Fixed Charge Metal Binary Salts Description Fixed Charge Metal* + a Nonmetal Rule: Full name of the metal + Stem on the nonmetal + the suffix “ide” Formula Name NaCl Sodium chloride CsF Cesium fluoride CaBr2 Calcium bromide MgO Magnesium oxide Li2S Lithium sulfide Al2O3 Aluminum oxide ZnH2 Zinc hydride AgI Silver iodide SrS Strontium sulfide Ca3N2 Calcium nitride K2Te Potassium telluride Na3N Sodium nitride CaC2 Calcium carbide LiH Lithium hydride Mg3P2 Magnesium
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CUP OF LAVA Camille Sager Darielle Donato Eric Valerio I. Introduction Salt‚ also known as common salt‚ table salt‚ rock salt‚ or halite‚ is an ionic compound with the formula NaCl (sodium+chloride). Sodium chloride is the salt most responsible for the salinity of the ocean and of the extracellular fluid of many multicellular organisms. As the major ingredient in edible salt‚ it is commonly used as a condiment and food preservative. Because of its importance to survival‚ salt has often
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Grade 11 Chemistry Year End Test Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. The molar mass of copper(II) sulfate pentahydrate‚ CuSO4.5H2O‚ is a. 245.6 g/mol d. 241.5 g/mol b. 177.5 g/mol e. 249.6 g/mol c. 219.2 g/mol ____ 2. A 100.0-g sample of a compound is composed of 16.3 g of carbon‚ 32.1 g of chlorine‚ and 51.6 g of fluorine. The empirical formula of the compound is a. CClF d. C3Cl2F6 b. CClF3 e. C9Cl6F18 c. C2Cl2F6 ____ 3. A
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level 5070/31 CHEMISTRY Paper 3 Practical Test October/November 2010 CONFIDENTIAL INSTRUCTIONS *4711088250* Great care should be taken to ensure that any confidential information given does not reach the candidates either directly or indirectly. The Supervisor’s attention is drawn to the form on page 7 which must be completed and returned with the scripts. If you have any problems
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ABSTRACT OBJECTIVE To learn the concept of separating organic compounds by utilizing the concept of acid/base chemistry in so that separation can be done. INTRODUCTION Using acid base chemistry in the separation of substances can be a quite useful technique in organic chemistry. A basic extraction can be carried out by applying a hot solvent such as water to a dry substance like coffee. This will allow for the extraction of caffeine and flavor from the coffee beans. Acid base chemistry can be
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