Inorganic Chemistry Exam 3 Exam With 100% Correct Answers 2024

Inorganic Chemistry Exam 3 Exam With 100% Correct Answers 2024 What is a transition metal defined as? - answerA transition metal is an element whose atom has an incomplete d sub-shell, or which can give rise to cations with an incomplete d sub-shell What elements are excluded from the transition metals and why? - answerZinc, Cadmium, and Mercury are excluded since they have a full d10 sub-shell Why does Chromium (Cr) have the electron configuration 4s13d5 and not 4s23d4? - answerPreference for half filled or completely filled d sub-shell due to gain in exchange energy Why are transition metals hard, strong, and have metallic luster? - answerDue to d orbital's ability to delocalize within the metal lattice; in metallic substances, the more electrons shared between the nuclei, the stronger the metal What are other general properties of transition elements? - answer- Good conductors of heat and electricity - High tensile strength - Often form colored compounds - Variety of different oxidation states - Incomplete d sub-shells - Often good catalysts - They form complexes - They are often paramagnetic Iron Extraction in the Blast Furnace Reactions (Step One) - answer2C + O2 --> 2CO Iron Extraction in the Blast Furnace Reactions (Step Two) - answerFe2O3 + 3CO --> 2Fe + 3CO2 Iron Extraction in the Blast Furnace Reactions (Step Three) - answer2Fe2O3 + 3C --> 4Fe + 3CO2 Iron Extraction in the Blast Furnace Reactions (Step Four) - answer2CH4 + O2 --> 2CO + 4H2 Iron Extraction in the Blast Furnace Reactions (Step Five) - answerFe2O3 + CO + 2H2 --> 2Fe + CO2 + 2H2O Pyrolusite (MnO2) Reaction - answerMnO2 + C --> Mn + CO Titanium Kroll Process of Extraction (Chlorination Step) - answerTiO2 + 2C + 2Cl2 --> TiCl4 + 2CO Titanium Kroll Process of Extraction (Reduction Step) - answerTiCl4 + 2Mg --> Ti + 2MgCl2 (1000 degrees Celsius for 2 days) Nickel Extraction Mond Process - answerNiO + H2 --> Ni + H2O Ni + 4CO --> Ni(CO)4 Ni(CO)4 --> Ni + 4CO (Decomposition at high temperature) Pentlandite (FeNi)6S8 reaction - answerNiS + O2 --> NiO + SO2 Vanadium Reaction - answerPbCl2.3Pb3(VO4)2 + Na