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Chemical Analysis, Altoforno, Redox Reactions, Inorganic Analisis,…
Chemical Analysis
Investigation
before anyting an investigation has to be planned
the practical procedures have to be planned and prepared
Altoforno
3CO+Fe₂O₃-->2Fe+3CO₂
CO₂+C-->2CO
C+O₂-->CO₂
carbon dioxide+carbon
hot air+coke
reduction of iron ore
limestone decomposes adn slag forms
CaCO₃-->CaO+CO₂
CaO+SiO₂-->CaSiO₃
Redox Reactions
metal1+metal2 oxide→metal1 oxide+metal2
Oxidant: loses oxigen and gains electrons
Reducent: gains oxigen and loses electrons
redox because x loses electrons and y gains electrons
if x does oxidation, he is the reducing agent
Inorganic Analisis
Qualitative analisis
We want to know which compound is present
we need to find a reaction that indicates that a particular ion is present
The most useful reaction is precipitation reactions
2 solutions are mixed and an isoluble solution is formed
A test that we can do to identify gasses and subastances in a solution
ferroso 2+ verde
ferrico 3+ marrone
copper blù
Testing for anions and cations
anions(negative ions)
silver nitrate solutions and others can be used to identify halide ions
cations(positive ions)
we find cations thanks to flame test colour