Reaksi dasar dalam elektrokimia adalah reaksi reduksi dan oksidasi redoks reaksi reduksi terjadi penurunan bilangan oksidasi dan penangkapan elektron. Tulisan resmi tentang suatu pokok yang dimaksudkan untuk dibacakan di muka umum di suatu persidangan dan yang sering disusun untuk diterbitkan. Inilah contoh laporan kegiatan yang bisa jadi acuan. Modern potentiometry bakker 2007 angewandte chemie. Potentiometry is an electrochemical analysis method that can be applied where a suitable color indicator is not. Tiap laporan biasanya harus sudah bisa diumumkan pada hari terakhir bulan berikut per masingmasing periode tiga bulanan, misal laporan maret harus sudah keluar akhir april, laporan juni harus keluar juli, dst. Berikut ini adalah penulisan format dan kumpulan contoh makalah yang sudah jadi dalam bentuk docx dan pdf yang bisa anda download dengan gratis.
Experiment 7 potentiometric titrations and multiprotic acids. Sebelum mempelajari p rosedur audit secara mendalam,perlu difahami lebih dahulu isi laporan audit, agar dapat diikuti kemana auditingdiarahkan. Crossbreeding between jantis black tilapia female parent and jantis white tilapia male parent has been performed by institution of germination and freshwater fish farming which is located at janti village district of klaten and produced tilapia larasati red tilapia strain janti f5. Then the measured cell potential can be expressed as where r is the gas constant, t is the temperature k, f is the faraday constant, n represents the charge on the analyte ion and a is the activity of the analyte ion.
Potentiometric analyses abstract the purpose of this experiment was to determine the molar concentration of a weak acid solution. Download kumpulan contoh makalah docx dan pdf makalah. Laporan potensiometri pdf slide 1 slide 2 electroanalisis elektrometri potensiometri, amperometri and voltametri slide 3 electroanalysis. Dari beberapa tanaman itu tidak sedikit yang dapat menjadi pencetak rupiah bila di eksploitasi secara tepat dengan analisis ekonomi yang baik. Berikut ini adalah penulisan format dan download kumpulan contoh makalah docx dan pdf berbagai mata pelajaran dan jurusan untuk tugas sekolah kalian. The contribution of ascorbic acid to the total antioxidant capacity of aqueous extracts of hips, hop cones, and lemon juice was estimated. Use of potentiometric assignment help assignment help. Karya tulis pelajar atau mahasiswa sebagai laporan hasil pelaksanaan tugas sekolah atau perguruan tinggi. Potentiometry definition of potentiometry by merriamwebster. Request pdf potentiometry in potentiometry, the potential of a suitable indicator electrode is measured versus a reference electrode, i. This is the method in which the potential between two electrodes is measured while the electric current usually nearly zero between the electrodes is controlled. Potentiometry is one type of electrochemical analysis methods.
In this article we will focus on the group of indicator electrodes that are classified as ionselective electrodes ises and will use the terms indicator and ionselective. Potentiometric titrations provide more reliable data than data from titrations that use chemical indicators and are particularly useful with colored or turbid solutions and for detecting the presence of unsuspected species. Potentiometric sensors based on liquid or polymer membrane materials are an established technology that successfully spearheaded the integration of sensing devices in the clinical laboratory for the automated testing of physiological samples for key electrolytes such as potassium, sodium, calcium, chloride and ph. The setup of a potentiometric measurement a galvanic cell consists of an indicator and a reference electrode that are immersed into the sample solution and connected to the two terminals of a voltmeter as shown in fig. Pengertian, fungsi potensiometer dan prinsip kerjanya, potensiometer adalah jenis resistor yang nilai resistansinya dapat diatur sesuai dengan kebutuhan. Analisis efisiensi produksi usaha peternakan ayam ras pedaging pola kemitraan dan mandiri di kota palu provinsi sulawesi tengah tesis untuk memenuhi sebagian persyaratan mencapai derajat sarjana s2 program studi magister ilmu ekonomi dan studi pembangunan rita yunus c4b007009 program pascasarjana universitas diponegoro. Doc contoh laporan hasil wawancara dalam bentuk makalah. Potensiometer juga sering digunakan dalam rangkaian pengatur terang gelapnya lampu light dimmer circuit dan pengatur tegangan pada power supply dc generator. In potentiometric measurements, the potential between two electrodes is measured using a high impedance voltmeter. Potentiometric study of acidbase properties of thiamine. Answer the questions posed at the end of this section in detail to hand in. Aug 02, 2019 laporan potensiometri pdf slide 1 slide 2 electroanalisis elektrometri potensiometri, amperometri and voltametri slide 3 electroanalysis mengukur berbagai. Electrochemistry is a part of chemistry, which determines electrochemical properties of substances. Pdf potentiometric determination of pka values of some.
Pengertian dan fungsi potensiometer, dalam peralatan elektronik, sering ditemukan potensiometer yang berfungsi sebagai pengatur volume di peralatan audio video seperti radio, walkie talkie, tape mobil, dvd player dan amplifier. Potentiometry article about potentiometry by the free. Laporan keuangan biasanya dilaporkan oleh perusahaan publik sebanyak empat kali, dalam periode per tiga bulanan. Basic principles of potentiometry combining two halfcells two halfredox reactions and measuring the potential difference between them that gives e cell if the potential of one hafcell one half reaction is held constant then the potential of the other half half cell or half reaction will be known and consequently. Makalah tentang laporan auditing kumpulan makalah mahasiswa. The acidbase titrations, involving measurement of change in ph to detect the end point, can be termed as ph. Potentiometry potentiometric titration potentiometry is a method used in electroanalytical chemistry, usually to find the concentration of a solute in solution. Potentiometry useful in the detergent industry to study the effect of ca, ba, f on. Akhir kata saya berharap semoga makalah ilmiah tentang seandainya indonesia tanpa pancasila ini dapat memberikan manfaat maupun inpirasi terhadap pembaca. Abstract for most chemists, potentiometry with ion. Complexometric titration using chelating agent y comprising n complexing groups is far more advantageous than titration.
Put a dentocar tablet into the beaker, weigh it again and calculate the mass of a tablet. Potentiometry potential is measured under the conditions of no current flow the measured potential is proportional to the concentration of some component of the analyte the potential that develops in the electrochemical cell is the result of the free energy change that would occur if the chemical phenomena were to proceed until the. The present article addresses the theory, practical aspects and troubleshooting of potentiometry. It was found that an iodinemodified platinum electrode gives a linear potentiometric response to 1. Laporan rancangan pembelajaran berbasis scl program pasca sarjana matakuliah. Then the measured cell potential can be expressed as where r is the gas constant, t is the temperature k, f is the faraday constant, n represents the charge on the analyte ion. A tutorial on the application of ionselective electrode. The ph electrode and potentiometric titrations in this experiment you will investigate the nernstian response of a ph electrode, perform potentiometric titrations, investigate the acidbase properties of the bicarbonate buffer system, and determine the pka values of lhistidine. Pengertian, fungsi potensiometer dan prinsip kerja potensiometer. Use of potentiometric, potentiometry, assignment help. In this approach, as with ph measurements, the potential of an electrochemical cell is associated with the concentration actually activity of a particular. Contoh laporan hasil wawancara dalam bentuk makalah. Potentiometric determination of pka values of some quinolones in methanolwater and acetonitrilewater binary mixtures january 2009 chemia analityczna 544. Potentiometric definition of potentiometric by the free.
A threeterminal resistor with a manually adjustable center connection that adjusts the resistance between the end terminals and the center, whose uses include controlling the volume of an amplifier. Potentiometric measurement system consists of two electrodes called reference and indicator electrode, potentiometer and a solution of analyte. Achmar mallawa,dea program studi magister ilmu perikanan fakultas ilmu kelautan dan perikanan universitas hasanuddin 2010. Dalam artikel ini akan format penulisan dan contoh laporan kegiatan. Li potentiometry p 4 reference electrodes ag agcl reference electrode there is an additional compartment to contain kcl solution or any other solution e. For a primary ion i with charge z i and a dominating interfering ion j with charge z j, the lower detection limit is defined as a i dl k ij. Analytical applications 2 main classes of electroanalytical techniques. Kamu pastinya tahu dong, hal terpenting dalam sebuah gelaran acara atau. Analisis morfometrik dan meristik nila oreochromis sp.
The potentiometric titration gave more precise results. Ascorbic acid in some preparations was determined by potentiometry. A threeterminal resistor with a manually adjustable center connection that adjusts the resistance between the end terminals and the center, whose. Experiment 7 potentiometric titrations and multiprotic acids reference. Ideally, the lower detection limit of an ise is caused by interfering ions, hence its value is defined by the concentration of other ions in the sample and the corresponding selectivity coefficients, k ij pot, of the membrane. The potentiometry to know the valency of metal ions it is most helpful for the determination of instability of complex ions in complexometry the potentimetry helpful for the determination of ca, k, cl ions in the body fluids like blood, plasma, sweat and serum. What is potentiometric titration pt is an electrochemical method of analysis,which deals with the measurement of electrical potential of an electrolyte solution analyte under the conditions of constant current. Amperometry or coulometry 1 potentiometry well focus on potentiometry. Salah satu tanaman yang memiliki potensi tersebut adalah tanaman nilam. Reaksi oksidasi terjadi kenaikan bilangan oksidasi dan pelepasan elektron. Reference solutions gy volumes in millilitres reference solution standardsolutiongy hydrochloric acid 10 gl hcl. Wet the tablet with about 1 cm3 of distilled water, grind it gently with the end of a glass rod, add 45. Strategi pembangunan dan per uu perikanan oleh prof. Konsep dasar elektrokimia ilmu yang mempelajari hubungan antara listrik, fenomena kimia dan energi kimia.
Potentiometric determination of ph european pharmacopoeia 6. The acidbase titrations, involving measurement of change in ph to detect the end point, can be termed as ph metry instead of potentiometry. Scribd is the worlds largest social reading and publishing site. Coo potentiometry analytical methods that are based upon potential measurements potential data are used to determine the concentration of analytes reference salt analyte indicator electrode bridge soln electrode eref ej eind reference electrode has an accurately known fixed electrode potential, independent of conc of the analyte or any other ions in. Comparison of proposed methods with the methods in literature used for urea determination method signal mechanism linear range, mm fluorescence cdseznsurease 010 fluorescence cdseznsemsaurease 0. Potentiometry is based on the measurement of the potential of an electrode system. It is a method of analysis in which we determine the concentration of an ion or substance by measuring the potential developed when a sensitive electrode is immersed in the solution of the species to be determined. Kegiatan penelitian tidak akan lepas dari kata laporan. The principle of potentiometry can be applied to measure the emf, in terms of ph unit on ph scale by suitable modifying the common voltmeter to high input impedance mv meter. Banyak tanaman yang dapat tumbuh dan berkembang dengan baik di negara ini.
Analisis efisiensi produksi usaha peternakan ayam ras pedaging pola kemitraan dan mandiri di kota palu provinsi sulawesi tengah tesis untuk memenuhi sebagian persyaratan mencapai derajat sarjana s2 program studi magister ilmu ekonomi dan studi pembangunan rita yunus c4b007009 program pascasarjana universitas diponegoro semarang juni 2009. What do we need to conduct a potentiometry experiment. The measured electro potential is used for qualitative and quantitative analysis of the analyte. Pengertian, fungsi potensiometer dan prinsip kerja. Isi laporan baku terkait pada format yang telah ditetapkan oleh ikatan akuntasi indonesia iai dan menyajikan isi laporan yang akan dipakai untuk menjelaskan makna setiap kalimat yang ada di dalam laporan. Potentiometry definition is the measurement of electromotive forces by means of a potentiometer. Chem 321 lecture 16 potentiometry 1022 student learning objectives in lab you will use an ionselective electrode to determine the amount of fluoride in an unknown solution. For most chemists, potentiometry with ionselective electrodes ises probably just means ph measurements with a glass electrode. Shaise jacob faculty pharmaceutical analysis nirmala college of pharmacy muvattupuzha, kerala, india slide 2. Potensiometri 10 jika koefisien aktivitas adalah sempurna yaitu sama dengan satu, maka a c dan larutan akan bersifat ideal. Download kumpulan contoh makalah yang sudah jadi makalah. Laporan kegiatan ini merupakan penjelasan tentang pelaksanaan simulasi penerapan standard operation procedures. The conductometric and potentiometric units used in this work have been designed and developed inhouse and their instrumentation is entirely different from that of commercially available conductivity and potentiometric units.
Potentiometry ph determination determination of solubili. Potentiometry 1024 page 2 for all measurements, the junction potentials are also unchanged. A typical set up for potentiometric titrations is given in figure 2. Doc 70357997makalahpotensiometri1 nindya sulistyani. In the most common forms of potentiometry, two different types of electrodes are used. Conventional voltmeters cannot be used because only very small currents can be drawn. Reference solutions gy volumes in millilitres reference solution standardsolutiongy hydrochloric acid. A titrimetric analysis was used to create the titration curve that determined the stoichiometric point. Laboratory manual for physical chemistry where t0 is the freezing point of the solvent. Kno 3 that is more compatible with the analyte solution.
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