with the hydroxyl group and the nitro group single bonded to the aromatic ring. This occurs at the pH of 5. At this point the aromatic compound is colorless and is in the ultraviolet range. However‚ as the pH begins to increase the hydroxyl group deprotonates‚ leaving the oxygen with a negative 1 charge. The molecule compensates for the negative charge by conforming to a more stable resonance structure. The structure now has the oxygen and the nitrogen for the nitro group double bonded to the ring
Free PH Acid dissociation constant Protein
ALPONSA MATRIC HR. SEC. SCHOOL‚NAGERCOIL MONTHLY TEST‚CHEMISTRY STD : XI 11-AUG-1012 MAX MARKS
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is this explosive really composed of and what enables it to create such an explosion? The dynamite is an explosive that usually consists of a mixture of nitro-glycerine or nitro starch‚ sodium nitrate‚ and an absorbent such as wood flour‚ sawdust or charcoal to cushion the nitro-glycerine from shock. The nitro-glycerine is often mixed with ingredients which depress its freezing point‚ so that the dynamite may be used under conditions of low temperature. Oxidizing agents are included
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PRODUCTS 1 Urea 2 Di-Ammonium Phosphate (DAP). 3 Calcium Ammonium Nitrate (CAN). 4 Ammonium Sulphates (AS) 5 Single Super Phosphate (SSP) 6 Nitro phosphate (NP) 7 Sulphate of Potash 8 Zinc Sulphate 1. Urea: More than 90% of the world’s production is destined for use as a nitrogen-release fertilizer. Urea has the highest nitrogen content of all solid nitrogenous fertilizers in common use (46.7%). 2. Di-Ammonium Phosphate (DAP): It contains 46% P2O5 and 18% N.
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can cause very serious burns‚ and they react violently with water and other chemicals. Nitric acid produces toxic nitrogen dioxide fumes during the reaction. Use gloves and a hood‚ avoid contact with the acids‚ and do not breathe their vapors. The nitro naphthalene is a suspected carcinogen; avoid contact. The mixture of hexanes is very flammable; keep flames away. Procedure: Into a 5-ml conical vial‚ 1.0 ml of mixed 1:1 sulfuric acid and nitric acid was added. Approximately‚ 0.610 g of finely divided
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The Activity of a Protease (Trypsin) Introduction Enzymes catalyze reactions by creating alternate reaction mechanisms whose transition states are more thermodynamically stable than uncatalyzed reactions (Berg et al.‚ 2002; UBC Department of Microbiology and Immunology‚ 2006). Increased thermodynamic stability in these transition states reduces the energy of activation‚ the minimum amount of energy input a chemical system requires for a reaction to occur (UBC Department of Microbiology
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Attempts to administer further Nitro sprays were unsuccessful‚ again due to the patient being uncooperative. Due to the deterioration of the patient’s respiratory effort‚ and the belief that the patient would be intubated upon arrival at the emergency department‚ the decision was made by myself and Paramedic Hartman to contact medical control and request order to RSI. Concerns: Dr. Patterson asked if we considered requesting orders for push dose nitro‚ and a nitro drip. The answer is No‚ because
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Nitration of Methyl Benzoate(2) Synthesis of 1‚4-Di-t-butyl-2‚5-dimethoxybenzene byFriedel-Crafts Alkylation of 1‚4-DimethoxybenzenePurpose1)To carry out the nitration of methyl benzoate‚ and then identify the major product formed (position at which nitro-group substitution takes place) by thin-layer chromatography (TLC)‚ the percent yield and the melting point range. 2)To synthesize 1‚4-Di-t-butyl-2‚5-dimethoxybenzene by Friedel-Crafts Alkylation of 1‚4-Dimethoxybenzene‚ and then determine the percent
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produce pure paracetamol. The reactions are summarised as shown below: Lab scale manufacture Paracetamol can be easily prepared in the laboratory using phenol. Phenol reacts with sodium nitrate and separate para nitro phenol from outho nitro phenol. Then para nitro phenol is converted into para amino phenol using sodium borohydride and acetylated with acetic
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Discussion: 2‚ 4-Dinitrodiphenylamine was synthesized by a nucleophilic aromatic substitution of 2‚ 4-dinitrobromobenzene and aniline. This reaction is an addition-elimination reaction. The nitro groups stabilize the carbanion intermediate with resonance and inductive effect. Because there are nitro groups on the ring‚ the substitution will occur rapidly because the
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