0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is the oxidation state of pph3?
In H3PO3 each H is 1+ for a total of 3+. Each O is 2- for a total of 6-. So, there is 3+ and 6- giving a net of 3-. In order to make the molecule neutral, P must have an oxidation state of 3+.
How many electrons does pph3 give in the calculation of valence electron counts in the 18 electron rule?
2 electrons
What is Tetraiodobis triphenylphosphine tin iv?
[SnI4(PPh3)2] is a tin complex that forms brownish-red crystals.
How do you convert oxime to amide?
By treating comp. with catalyst Ru(PPh3)3(CO)H2/dppe/TsOH with catalyst loading as low as 0.04 mol% u can get very good yields of expected amide. Note: This will not give Beckmann rearrangement product.
What type of ligand is PPh3?
It is a neutral ligand donating two electrons to the overall valence electron count of the molecule. Also known as triphenylphosphine; the phosphorous has three bonds to phenyl substituents as well as one bond to the main compound you are attaching it to, and a lone pair of electrons.
What is the oxidation state of pph3?
In H3PO3 each H is 1+ for a total of 3+. Each O is 2- for a total of 6-. So, there is 3+ and 6- giving a net of 3-. In order to make the molecule neutral, P must have an oxidation state of 3+.
How many electrons does pph3 give in the calculation of valence electron counts in the 18 electron rule?
2 electrons
What is Tetraiodobis triphenylphosphine tin iv?
[SnI4(PPh3)2] is a tin complex that forms brownish-red crystals.
What has the author D J S Powling written?
D. J. S. Powling has written: 'Detection of benzene vapour using a piezoelectric crystal coated with IrCo (PPh3)2 C1'
How do you convert oxime to amide?
By treating comp. with catalyst Ru(PPh3)3(CO)H2/dppe/TsOH with catalyst loading as low as 0.04 mol% u can get very good yields of expected amide. Note: This will not give Beckmann rearrangement product.
What type of ligand is PPh3?
It is a neutral ligand donating two electrons to the overall valence electron count of the molecule. Also known as triphenylphosphine; the phosphorous has three bonds to phenyl substituents as well as one bond to the main compound you are attaching it to, and a lone pair of electrons.
What type of bond will phosphorus make ionic or covalent?
Phosphorous will make a covalent bond, for example in the widely used neutral ligand, triphenyl phosphorous (PPh3).Some of the covalent complexes are charged, for example phosphate (PO4-3) however the phosphorous itself is covalently bound.
Can you show me the new pattern of CSIRUGC net question paper for forth coming examination?
Yes, I am just giving below two sample questions to show you how easy or tough are the questions asked:Chemical Sciences Paper I (Part-B):Q1) The element that shows both +3 and +4 oxidation states is:1. Cerium2. Promethium3. Gadolinium4. HolmiumChemical Sciences Paper II:Q1)(a) What is the origin of the blue colour in Prussian Blue? Comment onthe effect of (i) oxidant and (ii) reductant on its colour. (7)(b) Give an example of a diamagnetic transition metal hydride complex. How is the presence of metal bound hydride detected byspectroscopic methods. (6)(c) Rh(PPh3)3Cl ATHF, H2 Draw the structure of A above, showing the stereochemistry.(2)If you want a more complete information, visit the following link:http://careerquips.blogspot.com/2008/08/csir-ugc-net-exam-patternquestion.html
How does nitrogen reacts with fire?
ReactionsNitrogen is generally unreactive at standard temperature and pressure. N2 reacts spontaneously with few reagents, being resilient to acids and bases as well as oxidants and most reductants. When nitrogen reacts spontaneously with a reagent, the net transformation is often called nitrogen fixation.Nitrogen reacts with elemental lithium at Lithium burns in an atmosphere of N2 to give lithium nitrid: 6 Li + N2 → 2 Li3NMagnesium also burns in nitrogen, forming magniesium nitride. 3 Mg + N2 → Mg3N2N2 forms a variety of oadducts with transition metals. The first example of a dintrogen complex is Ru(NH3)5(N2)2. Such compounds are now numerous, other examples include IrCl(N2)(PPh3)2, W(N2)2(Ph2CH2CH2PPh2)2, and [(η5-C5Me4H)2Zr]2(μ2,η²,η²-N2). These complexes illustrate how N2 might bind to the metal in nitrogenase and the catalyst for the Haber process. A catalytic process to reduce N2 to ammonia with the use of a molybdenum complex in the presence of a proton source was published in 2005.The starting point for industrial production of nitrogen compounds is the Haber process, in which nitrogen is fixed by reacting N2 and H2 over an iron(III) oxide (Fe3O4) catalyst at about 500 °C and 200 atmospheres pressure. Biological nitrogen fixation in free-living cyanobacteria and in the root nodules of plants also produces ammonia from molecular nitrogen. The reaction, which is the source of the bulk of nitrogen in the biosphere, is catalysed by the nitrogenase enzyme complex which contains Fe and Mo atoms, using energy derived from hydrolysis of adenosine triphosphate (ATP) into adenosine diphosphate and inorganic phosphate (−20.5 kJ/mol).Hope it helped Bruce
What is the difference between an enzyme and a substrate?
Answer 1Catalysts are any agents that either speed up the chemical reactions or involved in reaction without themselves undergoing any apparent change. They may be proteins or other non proteins, chemical, metals etc. Enzymes are biocatalysts produced by the cells, which are globular proteinsAll enzymes are catalyst and not all catalysts are enzymes.Answer 2The answer to this is an enzyme is organic meaning we make them, and a catalyst is non-organic, meaning we don't make them i.e. copper, silver, metal and so forth. Enzymes are proteins that are catalysts to the chemical reaction.Answer #3 (by: xDGoMuSiCxD)An enzyme is a catalyst, but a catalyst is not an enzyme. An enzyme is a protein that speeds up and/or causes chemical reactions to happen fast enough for a living thing (or an organism) to survive. For example, heat is a catalyst, but not an enzyme. Another example is an amylase is both an enzyme and a catalyst. All cells in living things have need enzymes. For example, both potato and liver tissue need enzymes. I hope that helpedAnother AnswerSame as above, but a catalyst does not always need be an organic compound. It can be a coordinated metal, for example, RhCl(PPh3)3 involved in hydrogenation, whereas an enzyme is a biological agent.
What is the name of the compound of platinum?
Adams' catalyst, also known as platinum dioxide, is usually represented as platinum(IV) oxide hydrate, PtO2-H2O. It is a catalyst for hydrogenation and hydrogenolysis in organic synthesis. Cisplatin, cisplatinum or cis-diamminedichloroplatinum(II) (CDDP) is a platinum-based chemotherapy drug used to treat various types of cancers, including sarcomas, some carcinomas (e.g. small cell lung cancer and ovarian cancer), lymphomas and germ cell tumors. It was the first member of its class, which now also includes carboplatin and oxaliplatin. Zeise's salt is the chemical compound with the formula K[PtCl3(C2H4)].H2O. This air-stable, yellow, coordination complex contains an η2-ethylene ligand. The complex, which is primarily of historical interest, is commonly prepared from K2[PtCl4] and ethylene in the presence of a catalytic amount of SnCl2. The anion features square planar platinum(II). Magnus' green salt is the chemical compound with the formula [Pt(NH3)4][PtCl4]. This species has been of interest in materials chemistry and solid state physics because of its one-dimensional structure. It consists of a linear chain of Pt atoms separated by 3.25 Å. The Pt(II) centers are also coordinated to four molecules of ammonia and four chlorides, in an alternating manner. It is a semi-conductor. Potassium tetrachloroplatinate is the chemical compound with the formula K2PtCl4. This reddish pink-colored salt is an important reagent for the preparation of other coordination complexes of platinum. It consists of potassium cations and the square planar dianion PtCl42-. Tetrakis(triphenylphosphine)platinum(0) is the chemical compound with the formula Pt(P(C6H5)3)4, often abbreviated Pt(PPh3)4. The bright yellow compound is widely used as a precursor to other platinum complexes.
