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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effect Litmus Red: Turned purple Litmus Blue: Turned purple Dilute HCL: Started smoking and fizzing Dilute NaOH: No effect Cu Color: Gold‚ copper‚ metallic Odor: None Effect of Heat: None Cold H20: No effect‚ settled at bottom Hot H20: N effect Litmus Red: Turned purple Litmus Blue: Turned purple Dilute HCL: No effect Dilute NaOH: No effect Zn Color: Silver‚ metallic Odor: None Effect of Heat: None Cold H2O: No effect‚ settled at bottom Hot H2O: No effect Litmus
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UTAR FHSC1134 Inorganic Chemistry Trimester 3 Experiment 1 ________________________________________________________________________ Title: Investigating the Properties of Period 3 Oxides Aim: To examine the oxides of Period 3 elements and describe their structure and bonding. Introduction: Generally‚ there are oxides of metals and non-metals. Metals burn in oxygen to form basic oxides while non-metals form acidic oxides. Structurally‚ they are covalent or ionic compounds. You are to
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CH 125 INORGANIC CHEMISTRY FOR MICROBIOLOGY Laboratory Manual 2013 Edition By Brian Clark‚ Marco Castillo & Patrick Chan CENTENNIAL COLLEGE OF APPLIED ARTS & TECHNOLOGY‚ SCARBOROUGH‚ ONTARIO Preliminary Laboratory Information - CH 125 The following safety information is provided to the student in order to ensure that all students and college staff working in the laboratory are aware of common industrial laboratory safety practices. Laboratory
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agar which contains a neutral salt or it may be replaced with a porous cup. o Electron flow -- always from anode to cathode. (through the wire) o Standard cell notation (line notation) - anode/solution// cathode solution/ cathode Ex. Zn/Zn2+ (1.0 M) // Cu2+ (1.0 M) / Cu o Voltmeter - measures the cell potential (emf) . Usually is measured in volts. Balance this re-dox reaction: MnO4- + Fe2+ → Mn2+ + Fe3+ RED: OA: OX: RA Overall rxn: [acidic] *AP is a registered trademark of the College Board‚ which
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Selenium‚ found in group 16 of the periodic table‚ follows a cycle in the environment as it transfers between the biosphere‚ atmosphere and hydrosphere. It is also an essential element for humans and animals. It can cause both deficiencies and toxic effects if not taken in the correct quantities. This essay outlines the general features and behaviour of Se in the primary environment‚ its general abundance and its ability to substitute into minerals. Its Eh and pH also are important factors in determining
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Electrolysis a) Electrolysis is the decomposition of a substance to give simpler substances. The substance being electrolysed has to be an ionic compound. b) The substance being decomposed is called the electrolyte. c) In electrolysis the electric current enters and leaves the electrolyte by conducting rods called electrodes. The positive electrode is called the anode and the negative electrode is called the cathode. d) For electrolysis to occur the electrolyte must be in liquid form so that
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Introduction: Proteins are necklaces of amino acids – long chains molecules. Proteins are the basis of how biology get this done. As enzymes‚ they are the driving force behind all the biochemical reactions which make biology work. As structural elements‚ they are main constituents of our bones‚ muscles‚ hair‚ skin‚ and blood vessels. As antibodies‚ they recognize invading elements and allow the immune system to get rid of the unwanted invaders. For these reasons‚ scientists have sequenced the
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Mill for Slag Grinding tailings produced a comprehensive recycling‚ making people get the maximum benefits.Help people refine utilization of valuable metals or other components. Because many abandoned gold ores and tailings contain some Cu‚ Pb‚ Zn‚ etc.‚ the use of advanced technologies and integrated approach can reclaim this part of the useful elements. One thing is very important that we must understand a lot of the equipment operating procedures‚ these appliances and equipment
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2Cr+3(aq) + 3SO4-2(aq) + 4H2O(l) NO3-1(aq) + 4Zn(s) + 7OH-1(aq) + 6H2O(l) 4Zn(OH)4-2(aq) + NH3(aq) 4) Balance the following oxidation-reduction equations. All reactions occur in acidic solutions. a) b) c) d) Zn + NO3-1 ReO2 + Cl2 HNO2 + MnO4-1 Cu + NO3-1 Zn2+ + NH4+ HReO4 + Cl-1 NO3-1 + Mn2+ 2+ Cu + NO 5) Balance the following oxidation-reduction equations. All reactions occur in basic solutions. a) b) c) d) S2O3-2 + OCl-1 SO4-2 + Cl-1 NiO2 + Fe Ni(OH)2 + Fe(OH)3 SbH3 + H2O Sb(OH)4-1 + H2 P4 PH3
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