SKT1013 EXPERIMENT 4.docx - DEPARTMENT OF CHEMISTRY FACULTY...

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DEPARTMENT OF CHEMISTRY FACULTY OF SCIENCE AND MATHEMATICS UNIVERSITI PENDIDIKAN SULTAN IDRIS LABORATORY REPORT SKT 1013 INTRODUCTION TO INORGANIC CHEMISTRY SEMESTER 01 SESSION 2020/2021 ID NUMBER 1. E20182022982 2. E20182023010 NAME 1. NOR ELYA NAJIHAH BINTI DAUD 2. NURSYAFIQA BINTI RAHIMI GROUP B LECTURER DR. SITI MUNIRAH BINTI SIDEK EXPERIMENT NO. EXPERIMENT 4 TITLE PREPARATION OF POTTASIUM TRIS(OXALATO)-ALLUMINATE (III) TRIHYDRATE DATE 25 OCTOBER 2020 CHECK LIST (Please tick) Marks Spelling, punctuation and grammar 10 Format and style 10 Introduction 10 Materials 10 Methodology and jotter 10 Results 10 Discussions 10 Conclusions 10 References (minimum 2) 10 Conceptual understanding 10 TOTAL MARKS 100 EXPERIMENT 4: PREPARATION OF POTASSIUM TRIS(OXALATO)-ALUMINATE (III) TRIHYDRATE
OBJECTIVE Upon completion of this experiment, student should be able to: Synthesis potassium tris(oxalate)-alluminate (III) trihydrate. INTRODUCTION Aluminium is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery white, soft, nonmagnetic, ductile metal. Aluminium is the third most abundant element (after oxygen and silicon) in the Earth's crust, and the most abundant metal there. It makes up about 8% by mass of the crust, though it is less common in the mantle below. Aluminium metal is so chemically reactive that native specimens are rare and limited to extreme reducing environments. Instead, it is found combined in over 270 different minerals. Aluminium is remarkable for the metal's low density and for its ability to resist corrosion due to the phenomenon of passivation. Structural components made from aluminium and its alloys are vital to the aerospace industry and are important in other areas of transportation and structural materials, such as building facades and window frames. The most useful compounds of aluminium, at least on a weight basis, are the oxides and sulfates. Aluminium (Al) is located in p-block with principal oxidation state of 3+. The Al surface is protected from being oxidized by a layer called aluminium oxide ( Al 2 O 3 ). When Al 2 O 3 dissolves in excess hydroxide, the aluminium hydroxide, [Al(OH) 4 ] - ion is formed. The addition of oxalic acid, (H 2 C 2 O 4

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