The document describes the colors of various chemical substances and the results of heating carbonate salts. It lists possible colors for unknown substances based on the presence of ions like Cu2+, Fe3+, and I2. It also shows the observed color changes and gases evolved when carbonate salts of different cations like Na+, Ca2+, Fe2+ are heated.
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
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Oxyacids of sulphur are sulphur, hydrogen and oxygen containing compounds. Oxyacids of sulphur are sulphurous acid, sulphuric acid, peroxomonsulphuric acid, peroxodisulphuric acid, thiosulphuric acid, dithionous acid, dithionic acid, polythionic acid and pyrosulphuric acid.
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
Oxyacids of sulphur are sulphur, hydrogen and oxygen containing compounds. Oxyacids of sulphur are sulphurous acid, sulphuric acid, peroxomonsulphuric acid, peroxodisulphuric acid, thiosulphuric acid, dithionous acid, dithionic acid, polythionic acid and pyrosulphuric acid.
These are the class 12 practicals held in cbse schools and it contains all the inorganic and organic salt tests in a simplified way and all the other experiments
CHEMISTRY : ACIDS,BASES AND SALTS:
1.definition and characteristics of salts,
2. preparation of salts and,
3. types of salts,
4.uses and
5.hydrolysis of salt in water
These are the class 12 practicals held in cbse schools and it contains all the inorganic and organic salt tests in a simplified way and all the other experiments
CHEMISTRY : ACIDS,BASES AND SALTS:
1.definition and characteristics of salts,
2. preparation of salts and,
3. types of salts,
4.uses and
5.hydrolysis of salt in water
I hope it might be helpful to you.
Email me on sidhu.s.karanvir@gmail.com to see more work.
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I gave 1 hour seminar at ANSTO (Australian Nuclear Science and Technology Organization) to introduce my approach to magnetism. I see myself as an experimental physicist who is studying magnetism by using neutron scattering techniques. Throughout my career, I had learned local structure analysis (PDF), magnetic structural analysis, and inelastic neutron scattering technique to investigate superconductor, multiferroics, antiferromagnets, helimagnets, and frustrated magnets. I was trying to explain my approach to magnetism as an experiment physicist to both professional scientists and novices.
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Discover the innovative and creative projects that highlight my journey through Full Sail University. Below, you’ll find a collection of my work showcasing my skills and expertise in digital marketing, event planning, and media production.
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Sustainability has become an increasingly critical topic as the world recognizes the need to protect our planet and its resources for future generations. Sustainability means meeting our current needs without compromising the ability of future generations to meet theirs. It involves long-term planning and consideration of the consequences of our actions. The goal is to create strategies that ensure the long-term viability of People, Planet, and Profit.
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Remote sensing and monitoring are changing the mining industry for the better. These are providing innovative solutions to long-standing challenges. Those related to exploration, extraction, and overall environmental management by mining technology companies Odisha. These technologies make use of satellite imaging, aerial photography and sensors to collect data that might be inaccessible or from hazardous locations. With the use of this technology, mining operations are becoming increasingly efficient. Let us gain more insight into the key aspects associated with remote sensing and monitoring when it comes to mining.
1. (A) Colour of Substances
The several possibilities for a particular colour are given below:
Colour of Unknown Chemicals/Ions
Substances
Copper(II) oxide, CuO
Iron(II) oxide, FeO
Black
Manganese(IV) oxide, MnO2
Iodine crystals, I2
5. Colour of Unknown Chemicals/Ions
Substances
Lead(II)
Yellow oxide,
PbO
Lead(II)
iodide,
PbI2,
See the web site below for the test for iodide
http://www.youtube.com/watch?v=tQ_sJTQAnRM
Silver
bromide,
AgBr
(Pale
yellow)
Silver
iodide, AgI
7. Colour of Unknown Chemicals/Ions
Substances
Na+, K+, NH4+, Ca2+, Zn2+, Pb2+, Al3+
White
(Absence of salts like iron(II), iron(III), copper(II) and other
transition elements)
Colourless Dilute acids, alkalis, hydrogen peroxide(H2O2)
Solution
(B) Action of Heat on Carbonates
Cation Observations/Gas Equation
evolved
Na+ White residue; Na2CO3.10H2O(s) → Na2CO3(s) + 10H2O(g)
Water vapour evolved white crystals white powder
+
K White residue Not decomposed
Ca 2+
White residue; carbon CaCO3(s) → CaO(s) + CO2(g)
dioxide evolved
white white
Zn2+ Residue is yellow when hot ZnCO3(s) → ZnO(s) + CO2(g)
and white when cold;
white yellow –hot
carbon dioxide evolved
white - cold
Pb 2+
Yellow (orange) residue; PbCO3(s) → PbO(s) + CO2(g)
carbon dioxide evolved
white yellow
Al3+ White residue; carbon Al2(CO3)3(s) → Al2O3(s) + 3CO2(g)
dioxide evolved
white white
Cu 2+
Black residue; carbon CuCO3(s) → CuO(s) + CO2(g)
dioxide evolved
green black
Fe2+ Black residue turning FeCO3(s) → FeO(s) + CO2(g)
reddish brown on contact
green black
with air (oxidation); carbon
dioxide evolved
4FeO(s) + O2(g) → 2Fe2O3(s)
air reddish-brown
Fe3+ Reddish-brown residue; Fe2(CO3)3(s) → Fe2O3(s) + 3CO2(g)
carbon dioxide evolve
brown reddish-brown
