Chameleon reactions
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A set of color changing reactions what can be easily performed in a school laboratory. Intention is to generate curiosity in students towards chemistry
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Crystal field theory proposes that ligands behave as point charges that create an electric field around a central metal ion. This affects the energies of the metal's d-orbitals. In an octahedral complex, ligands along the x, y, and z axes interact more strongly with the dz2 and dx2-y2 orbitals, splitting them into the higher-energy eg set. The dxy, dyz, and dxz orbitals interact less with ligands between the axes, forming the lower-energy t2g set. This splitting of orbital energies, described by the crystal field splitting parameter Δ0, helps explain differences in complexes' magnetic properties.
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This document provides a procedure for estimating manganese in ferromanganese alloy using EDTA titration. Ferromanganese is an alloy containing mainly manganese and iron. The procedure involves dissolving the alloy, masking the interference of iron using triethanolamine, and titrating the manganese with standardized EDTA solution using thymolphthalexone indicator. The exact concentration of the EDTA solution is determined by titrating it against a standard zinc sulfate solution using Eriochrome Black-T indicator. The results obtained will be the molarity of EDTA, manganese ion solution, amount of manganese in the given alloy, and percentage of manganese.
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1. The trans effect refers to the observation that certain ligands increase the rate of ligand substitution when positioned trans to the departing ligand.
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The document discusses several concepts related to non-ideal gases and solutions, including:
1) Fugacity is introduced as a concept to represent the behavior of real gases, which differs from ideal gases. Fugacity takes the place of pressure in equations relating to free energy.
2) At low pressures, fugacity approximates pressure as real gases behave more ideally. Equations are provided to calculate fugacity at low pressures.
3) Excess functions quantify the non-ideal behavior of real mixtures and are defined as the difference between properties of real and ideal mixtures under the same conditions. Excess properties include volume, enthalpy, and chemical potential.
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A brief introduction to lanthanide elements is given.
Order .ppts like this at <https://www.fiverr.com/anikmal/teamup-with-you-to-prepare-the-best-presentation>
Along with their physical and chemical properties are also shown. Helpful for quick understanding on lanthanide series.
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The document discusses various applications of lanthanide elements. It describes how lanthanides are used in glass polishing and ceramics to impart hardness, strength, and inertness. They are also used in nuclear applications as beta sources and in nuclear-powered batteries. Additionally, lanthanides have catalytic applications in oil refining and automobile exhaust emission control. They are further applied in electronic devices such as TV screens, batteries, and LEDs, as well as in medical imaging technologies and developing technologies like lasers, fiber optics, and superconductors.
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Alkynes can be prepared through several methods:
1. From calcium carbide by reacting calcium carbide with water to produce acetylene.
2. From vicinal dihalides by treating them with alcoholic potassium hydroxide to undergo dehydrohalogenation and form alkyne.
3. Alkynes readily react with hydrogen in the presence of catalysts like nickel, platinum or palladium through a reaction called hydrogenation.
Lanthanide contraction
LANTHANIDE CONTRACTION AND SEPARATION OF LANTHANIDES BY USING ION EXCHANGE METHOD AND SOLVENT EXTRACTION METHOD
BSc V SEM B Electrochemistry 1.pptx
4.2 - Debye-Huckel’s theory of Strong Electrolytes - Onsagar equation (No derivation) -Verification and Limitations Wien effect, Falkenhagen effect.
K2Cr2O7 & KMnO4
K2Cr2O7 has the following key properties:
1. It forms orange crystals that melt at 669 K and are moderately soluble in cold water but less soluble in hot water.
2. It is a powerful oxidizing agent that oxidizes substances like I-, Fe2+, H2S, and SO2 in the presence of dilute sulfuric acid.
3. Its solutions change color from orange to yellow upon addition of an alkali due to the equilibrium between dichromate and chromate ions, and the color changes back to orange with an acid.
Reduction reactions
This document provides an overview of reduction reactions in organic chemistry. It discusses various types of reduction reactions including catalytic hydrogenation, hydride transfer reactions using reagents like LiAlH4 and NaBH4, dissolving metal reductions, and others. Specific metal hydride reductions using boron and aluminum reagents like sodium borohydride, sodium cyanoborohydride, lithium aluminum hydride, and diisobutylaluminum hydride are explained in detail including their mechanisms and selectivity. Diimide reduction is also briefly covered. The document concludes with a bibliography of reference books on organic reaction mechanisms.
Chap 8 thiols and sulfides (1)
Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively. Thiols contain an R-S-H functional group and are named with the suffix -thiol. Sulfides contain an R-S-R' group and are named similarly to ethers with sulfide replacing ether. Practice problems involve naming thiols and sulfides. Halogenation of alkanes involves radical initiation by heat or light followed by radical propagation and termination reactions. The reactivity depends on the halogen used as well as the stability of the radical intermediates formed.
Preparation of tetraaminecopper(ii) sulphate complex
This document provides instructions for preparing tetraaminecopper(II) sulfate complex in 3 steps:
1) Dissolving copper sulfate in water and adding ammonium hydroxide to form an intense blue solution.
2) Adding ethanol and heating the solution to obtain a clear deep blue solution.
3) Allowing the hot solution to crystallize for an hour, filtering and drying the blue-purple tetraaminecopper(II) sulfate crystals. Yield of the product is then determined.
Inner transition elements
The document discusses inner transition elements, specifically the lanthanide and actinide series. It provides details on their electronic configurations, oxidation states, properties such as color and magnetism, extraction from monazite sand, and separation methods. It also compares the lanthanides and actinides, noting they both show lanthanide/actinide contractions and have similar properties, but the actinides exhibit more variable chemistry and are all radioactive.
What's hot (20)
Estimation of manganese in presence of iron in ferromanganese by edta titration.
Estimation of manganese in presence of iron in ferromanganese by edta titration.
To estimate the amount of Fe as Fe2O3 in the given solution of ferric chloride
To estimate the amount of Fe as Fe2O3 in the given solution of ferric chloride
Preparation of tetraaminecopper(ii) sulphate complex
Preparation of tetraaminecopper(ii) sulphate complex
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This document discusses separation of mixtures. It begins by explaining why separation is important and defines pure and impure substances. It then discusses the different types of mixtures like homogeneous and heterogeneous mixtures. Various methods of separating mixtures are covered, including hand picking, sieving, filtration, evaporation, centrifugation and distillation. Industrial separation techniques like magnetic separation are also explained. Properties of the substances involved like size, weight, density, volatility and magnetic properties determine which separation method to use. The key goal of separation is to obtain pure substances from mixtures.
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1. pH is a measure of how acidic or alkaline a solution is, represented by a number between 0-14. It is related to the concentration of hydrogen ions (H+) in the solution.
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3. The pH scale represents the concentration of H+ ions, with lower numbers being more acidic and higher numbers being more alkaline. Neutral solutions have a pH of 7.
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𝐄𝐱𝐩𝐥𝐚𝐢𝐧 𝐭𝐡𝐞 𝐍𝐚𝐭𝐮𝐫𝐞 𝐚𝐧𝐝 𝐒𝐜𝐨𝐩𝐞 𝐨𝐟 𝐚𝐧 𝐄𝐧𝐭𝐫𝐞𝐩𝐫𝐞𝐧𝐞𝐮𝐫:
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Event Link:- https://meetups.mulesoft.com/events/details/mulesoft-mysore-presents-mule-event-processing-models/
Agenda
● What is event processing in MuleSoft?
● Types of event processing models in Mule 4
● Distinction between the reactive, parallel, blocking & non-blocking processing
For Upcoming Meetups Join Mysore Meetup Group - https://meetups.mulesoft.com/mysore/YouTube:- youtube.com/@mulesoftmysore
Mysore WhatsApp group:- https://chat.whatsapp.com/EhqtHtCC75vCAX7gaO842N
Speaker:-
Shivani Yasaswi - https://www.linkedin.com/in/shivaniyasaswi/
Organizers:-
Shubham Chaurasia - https://www.linkedin.com/in/shubhamchaurasia1/
Giridhar Meka - https://www.linkedin.com/in/giridharmeka
Priya Shaw - https://www.linkedin.com/in/priya-shaw
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"Learn about all the ways Walmart supports nonprofit organizations.
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The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
Walmart Business + (https://business.walmart.com/plus) is a new shopping experience for nonprofits, schools, and local business customers that connects an exclusive online shopping experience to stores. Benefits include free delivery and shipping, a 'Spend Analytics” feature, special discounts, deals and tax-exempt shopping.
Special TechSoup offer for a free 180 days membership, and up to $150 in discounts on eligible orders.
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ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Chameleon reactions
- 1. MADHAVA B MALLIA BHABHA ATOMIC RESEARCH CENTRE
- 2. Chameleon Reactions.. •Color changing reactions… 2
- 3. Color changes of potassium permanganate… 3
- 4. Sucrose (C12H22O11) + Sodium hydroxide (NaOH) + Potassium permanganate (KMnO4) KMnO4(violet) K2MnO4(green) MnO2 (brown/yellow) 4
- 5. Blue Bottle Reaction… Sucrose (C12H22O11) + Sodium hydroxide (NaOH) + Methylene Blue Dye Color change with time 5
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