LAPORAN PROGRAM MOTIVASI DAN KEM BINA SEMANGAT SEKOLAH KEBANGSAAN SUNGAI LANG TAHUN 2016 27 Julai yang lalu telah berlangsung dengan jayanya Program Motivasi “Chop Sekejap” peringkat sekolah. Program ini telah berlangsung selama setengah hari, padat dengan acara yang disediakan oleh pihak guru pelatih sekolah sekolah. 27 Julai hari rabu. Kami panjatkan puji syukur ke Hadirat Allah SWT telah memberikan rahmat dan karunia-nya sehingga kami dapat menyelesaikan program kerja PMR ( Palang Merah Remaja ) di SMAN 2 WOJA, tujuan antara lain sebagai acuan dan pedoman kami dalam melaksanakan kegiatan tersebut. Kami mengucapkan terima kasih kepada.
.The Reaction between Hydrogen and Oxygen on Platinum PROGRESS IN ESTABLISHING KINETICS AND MECHANISMSBy G. Acres, M.SC., P m. Research Laboratories, Johnson Matthey & Co LimitedNothing certain is understood concerning the mechanism of what is the oldest known, and the simplest, catalytic oxidation.
Recent work in the Johnson Matthey Research Laboratories has partly explained some of the inconsistencies found in previous work, and has established the best con- ditions for studying the kinetics of this reaction. In this article new suggestions are put forward on possible reaction mechanisms.The formation of water when platinum sponge or strip is exposed to a mixture of hydrogen and oxygen was one of the first catalytic reactions to be discovered and recognised as such (I), but in spite of numerous subsequent investigations there exists no accepted mechanism for this reaction. There are two related reasons for this gap in our catalytic knowledge: (i) in no instance arc two sets of kinetic results identical (see table), and (ii) the activity of platinum catalysts has not been reproducible.
Much more is known about the mechanism of catalytic exchange and hydrogenation reac- tions than about this, the simplest oxidation reaction.Some Tentative Mechanisms As with many other catalytic reactions, aclassical kinetic approach has not yielded sufficient information for the development of a satisfactory reaction mechanism, and hence additional information has been sought. Isotopes have been used to determine the composition of the activated complex formed in the rate determining step (2, 3), and the phenomenon of catalyst activation by adsorbed oxygen has received considerable attention.