De Leon‚ Jo-Anna Maria N. 3ChEA Group No. 2 Experiment No. 5 Spectrophotometric Determination of pKa I. Introduction The equilibrium constant of the dissociation of an indicator in water will be determined experimentally using spectroscopic method.This experiment aims to demonstrate the principle of equilibrium and the interaction of matter with light. II. Methodology Figure . UV-VIS Spectrophotometer 10 solutions covering the entire pH range from 1 to 13 were prepared
Free PH Acid dissociation constant PH indicator
2.5. Characterization Methods 1H–NMR and 13C–NMR spectra of HPPP‚ BOMP and HVPA were taken in CDCl3 on Bruker DPX–300 MHz spectrometer using tetramethylsilane (TMS) as an internal standard. FT–IR spectra of the synthesized compounds‚ HPPP‚ BOMP‚ HVPA and photocrosslinked polymers were recorded on Perkin-Elmer system 2000 (4000–400 cm–1) spectrometer‚ using KBr pellets. Medium pressure mercury vapour lamp to the power output of 125W/cm2 was used for the photocrosslinking study. The viscosity of the
Premium Chemistry Spectroscopy Electromagnetic radiation
1.1 DETECTION OF Hg2+ Refer(1) Why is detection of Hg2+ important?? Mercury contamination poses severe health risks. It can enter into environment through natural as well as human activities. Once it enters marine environment‚ bacteria convert inorganic mercury to methyl mercury which enters food chain and is accumulated in large edible fish. Its imbalance can lead to neurological disorders and can cause Minamata disease. Procedure to detect Hg2+ 1. MS1 (Mercury Sensor 1)‚ a water soluble‚ fluorescein
Premium Mercury Spectroscopy Metal
the temperature in air. 2.3.6. Removal of heavy metal ions from water of lake El-Manzala‚ Egypt via adsorption: The removal of heavy metal ions from water of lake El-Manzala‚ Egypt by material samples was evaluated by utilizing atomic absorption spectroscopy (AAS) (Derkin Elmer 2380 spectrophotometer). The tested heavy metal ions included Cd(II)‚ Cu(II)‚ and Pb(II) as examples of heavy metal ions in water from lake El-Manzala‚ Egypt. 3. Results and Discussion 3.1. FT-IR Spectral
Premium Spectroscopy Light Electromagnetic radiation
Australian physicist Alan walah Atomic spectrometric methods are rapid ‚convenient and have high selectivity The method involves a process called as atomization in which the sample is converted to a gaseous phase atoms or ions Atomic absorption spectroscopy is based on the same principle as the flame test used in qualitative analysis. When an alkali metal salt or a calcium‚ strontium or barium salt is heated strongly in the Bunsen flame‚ a characteristic flame colour is observed: Na -- yellow Li--
Premium Atom Photon Quantum mechanics
Analytica Chimica Acta 547 (2005) 188–196 Acomparative study of diesel analysis by FTIR‚ FTNIR and FT-Raman spectroscopy using PLS and artificial neural network analysis Vianney O. Santos Jr.‚ Flavia C.C. Oliveira‚ Daniella G. Lima‚ Andrea C. Petry‚ Edgardo Garcia‚ Paulo A.Z. Suarez‚ Joel C. Rubim ∗ Laborat´ rio de Materiais e Combust´veis (LMC)‚ Instituto de Qu´mica da Universidade de Brasilia‚ C.P. 04478‚ 70904-970 Bras´lia‚ DF‚ Brazil o ı ı ı Received 10 January 2005; received in revised
Premium Management Strategic management Marketing
3. Result and discussion 2.1 Physicochemical properties The formations of BPM I-III were confirmed by FT-IR‚ powder XRD and SEM studies. 2.1.1 Fourier transform infrared spectroscopy FT-IR spectra of BPM I-BPM III (Fig. 1a-1c) exhibited characteristic absorption bands of CTS ranges from 1637-1639 cm−1 which are attributed to amide I bands (C=O stretching mode along with an N–H deformation mode). Broad bands from 1130-978 cm−1‚ 1131-975 cm−1 and 1131-971 cm−1 were observed for phosphate stretching
Premium Chemistry Spectroscopy Oxygen
Rock crushing‚ splitting samples‚ drying and grinding: Preparation for rock powder. Demonstrator: Encik Zamrut Daunar Date (and venue): 28 July 2010 (Basement) Aim: To crush‚ split‚ and grind solid sample rock for preparing rock powder. Objective: 1. To learn the techniques and mechanisms of preparing rock powder; which will be used as a sample for Bernas Bomb and XRF/ XRD techniques. 2. To know the processes and machines used in the rock crushing and sample preparation. Apparatus/
Premium Diffraction Spectroscopy Crystallography
interesting facts about science and technology in India. First Indian Scientist to Win Nobel Prize Sir Chandrasekhara Venkata Raman (C.V. Raman) was the first Indian scientist to win Nobel Prize. C.V. Raman was awarded the 1930 Nobel Prize in Physics for his work on the scattering of light and for the discovery of the Raman effect‚ which is named after him. Raman effect relates to the inelastic scattering of a photon. When light is scattered from an atom or molecule‚ most photons are elastically
Premium Nuclear power Indian Space Research Organisation
QUANTITATIVE DETERMINATION OF COPPER (II) CONCENTRATION BY SPECTROPHOTOMETRY D.DEL PRADO1‚ J. BELANO1‚ M.MAHUSAY2‚and M.FRANCISCO2 1 DEPARTMENT OF FOOD SCIENCE AND NUTRITION‚ COLLEGE OF HOME ECONOMICS 2INSTITUTE OF CHEMISTRY‚ COLLEGE OF SCIENCE UNIVERSITY OF THE PHLIPPINES‚ DILIMAN‚ QUEZON CITY 1101‚ PHILIPPINES DATE SUBMITTED: 12 MARCH 2013 DATE PERFORMED: 7 MARCH 2013 ------------------------------------------------- ------------------------------------------------- ABSTRACT -------------------------------------------------
Premium Chemistry Solution Spectroscopy