special occasions like independence day. The excitement produced by fireworks like ‚ brightening the night sky and plunging it with vivid displays of colour and insignificant‚ which makes them a crowd pleaser. Behind all the excitement of fireworks‚ chemistry plays an important role in creating the vivid colours we witness lighting up the sky. The actual chemical reactions that take place in the explosions require the use of oxidisers‚ reducing agents and binders. The additions of varying metal chlorides
Premium Oxygen Chemical reaction Hydrogen
SrSe D) SrSe2 15) How many “dots” would be around the central atom in the Lewis structure of S? 15) ______ A) 5 B) 6 C) 7 D) 4 16) What volume of a 12.0 M HCl solution is needed to provide 0.6 mol of HCl? 16) ______ A) 12 mL B) 50 mL C) 5 mL D) 50 mL 17) Which is the strongest acid in aqueous solution? 17) ______ A) CH4 B) HNO2 C) KCl D) NH3 18) KCl is soluble in water but not in toluene this is
Premium Trigraph Chlorine Oxide
a quaternary ammonium salt to form a strong base. The strong base created an anion from an ester of malonic acid. The ion reacted with bromobutane which was also in the reaction solution to give the product. The yield product was a butyl derivative of malonic ester that was isolated by adding water to the reaction solution‚ and extracting with ether. The ether was dried and evaporated to give the product. Procedures: 0.039g of tricaprylmethylammonium chloride‚ 0.358g of 1-bromobutane‚ 0.416g ofdiethyl
Premium Chemistry Ion Ammonia
-457200315912500RATES OF FERMENTATION OF FRUIT AND VEGETABLE JUICES -1598295325501000OBJECTIVE The objective of this project is to study the rates of fermentation of the following fruit or vegetable juices. Apple juice 125412559309000Carrot juice INTRODUCTION Fermentation is a slow decomposition of complex organic compound into simpler compounds by the action of enzymes. Enzymes are complex organic compounds‚ generally proteins. Examples of fermentation are souring of milk curd‚ bread making
Premium Ethanol Yeast Fermentation
Notice that the compound absorbs light of wavelengths from 6000 to above 8000 Å‚ which is the yellow-to-red region of the visible spectrum. The light transmitted through the solution comes out richer in light of blue wavelengths (4000 to 5000 Å) than white light‚ and so the solution looks blue. When ammonia is added to a solution of copper(II) cation‚ a deep blue color is formed immediately. The blue color is due to the complex. ion Cu(NH3)42+. Cu(H2O)42+ + 4NH3 Cu(NH3)42+ + 4H2O This
Premium Ammonia Chemistry Copper
Chemistry Activity # 7.5: An Investigatory Project: Dyeing Using Indigenous Plants In this activity‚ you will plan and carry out experiments to answer specific research questions regarding dyeing of fabric materials. In the process of investigation‚ you will learn to practice the scientific method when you carry out controlled experiments. You can pool and share your results later with the other groups. Questions that you may want to answer through your investigations: 1.
Premium Dye Fiber Alum
laboratory. Give the reason for the following; Iodimetric titrations are usually performed in neutral or mildly alkaline (pH 8) to weakly acid solution. 2. Iodine solutions are prepared by dissolving I2 in a concentrated solution of potassium iodide. 3. Iodimetric determination of vitamin C is performed rapidly after preparing vitamin C solution 9-1 E XPERIMENT 9 IODIMETRIC TITRATION OF VITAMINE C INTRODUCTION Redox Titrations are among the most important types of analyses
Premium Iodine Titration 3rd millennium
3090 3090▌ SHORT REVIEW Reaction of Diazo Compounds with Organoboron Compounds short review Huan Li‚ Yan Zhang‚ Jianbo Wang* Reaction of Diazo Compounds with Organoboron Compounds Abstract: The transition-metal-free reactions of diazo compounds with organoboron compounds are reviewed. This type of reaction provides an alternative approach for the formation of C–C‚ C–B‚ and C–Si bonds. Moreover‚ by using tosylhydrazones as diazo compound precursors and boronic acids/esters as the
Premium Functional groups Organic chemistry
Table 1 Vinegar - 3 - 2.2 Sodium BiCarbonate Solution - 9 - 8.3 Lemon Juice - 4 - 2 Laundry Detergent - 8 - 8.2 Bleach - 12 - 12.0 Ammonia - 12
Premium PH Acid Hydrochloric acid
electrolysis is whether the electrode is active or inert. The following circuit was set up to investigate this factor. W and X are carbon electrodes. Y and Z are copper electrodes. a)Write the formulae of the ions present in copper(II) sulphate solution. b)What would you expect to observe in Beakers A and B when a current is flowing through the circuit? c)Identify the cathode in Beaker A and the anode in Beaker B. d)Write an ionic equation to represent the reaction occurring at the cathode in
Premium Electrochemistry Sodium chloride Chlorine