2MnO4- + 16H+ + 5C2O42- ⎯→ 10CO2 + 8H2O + 2Mn2+ Notes: 1. Mn2+ is colourless 2. In the reaction‚ the purple colour of the solution turns into colourless. MnO4-: Manganate(VII) ion (Purple) Mn2+: Manganese(II) ion colourless Decomposition of Hydrogen Peroxide 2H2O2 - ⎯→ 2H2O + O2 Catalyst: manganese(IV) oxide(MnO2)‚ Iron(III) oxide (Fe2O3)‚ silver (Ag) Haber Process (Manufacture Ammonia) N2 + 3H2 ⎯→ 2NH3 (More detail in Form 4 Chapter 9) Contact Process(Manufacture Sulphuric Acid)
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PROBLEM SOLVING. 1. Calculate how many hydrogen atoms are contained in 2.3g of C2H5OH. [2] 2.3 x 1023 Hydrogen Atoms - 2.3g * 1mol/6.06g * 6.02 1023 / 1mol 2. An oxide of sulfur contains 60% by mass of oxygen. Determine the empirical formula of the compound. [2] 3. Ethylene glycol‚ the substance used in automobile antifreeze‚ is composed of 38.7 g carbon‚ 9.7 g hydrogen‚ and 51.6 g oxygen. a. What is the empirical formula of the compound?
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placed into water‚ it splits into a hydrogen ion and a chlorine ion. The amount that an acid ionises depends on its strength (Tinnesand‚ n.d.). A strong acid ionises completely while a weak acid only ionises partially. Furthermore‚ the strength of the acid will also have an effect on the rate of the reaction. A strong acid will have a faster reaction then
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(no insoluble end products are formed) can he divided into two broad groups: (1) corrosion with no hydrogen evolution‚ and (2) corrosion with hydrogen evolution. Hydrogen is liberated in those processes when H+ ion is acting as depolarizer (electron acceptor). If‚ however‚ the solution contains a depolarizer other than H+ ions‚ as for example Oz‚ H202‚etc.‚ then corrosion proceeds with hydrogen evolution. It is the purpose of this paper to report that all these corrosion processes follow a
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widely. While making cheese‚ protease helps coagulate milk in cheese production. This helps in turning the milk from a soluble product to an insoluble product. Besides‚ the enzyme catalase is used in the medical industry. Catalase helps break down hydrogen peroxide to oxygen and water. This enzyme is used for dressing up wounds. After its catabolism‚ oxygen will heal up wounds faster. In short‚ enzymes help us humans not only inside our bodies‚ but also in the real world by being used in various
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isoborneol. The concept of reduction and also oxidation‚ the opposite procedure of reduction‚ deals mostly with electron transfer between atoms. It will not be elaborated here‚ but the reduction procedure involved in this experiment is basically adding hydrogens and losing the carbon-oxygen double bond. (See FIGURE-4) (FIGURE-4) In order to tell how much borneol is formed during reactions‚ both qualitatively and quantitatively‚ infrared spectroscopy and gas chromatography are executed on the products
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Form A Chemistry 100 Introduction to General Chemistry Fall Semester‚ 2010 Exam One‚ 150 points On this page print your name‚ your lab section number‚ and the name of your TA. Also sign this test booklet. Name________________________________Lab section____________TA___________ Signature________________________________________________________________ The exam consists of 21 problems and one extra credit problem. Partial credit is given only for work that is legible and logically and clearly
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Associate Program Material Levels of Life Worksheet Complete all three parts of this worksheet. Part I: Atomic Structure – Fill in the missing information on atomic structure and organic compounds. Atomic Structure Subatomic Particle Charge Location in an Atom Proton Positive Nucleus Neutron Neutral Nucleus Electron Negative Spherical (outer-shell) Organic Compounds Large Biological Molecule Atoms it Contains Monomer(s) Function(s) in Living Organisms Carbohydrates
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more catalyst will the speed of a reaction always continue to increase? Explain your answer. It will continue to speed up the reaction until there is more catalyst than the limiting reactant. 3. In this lab you will produce oxygen and water from hydrogen peroxide (H2O2). Write a balanced reaction equation for this reaction. 2H2O2(l)------>2H2O(l)+O2(g) 4. What causes the bubbles to form in this reaction? The production of oxygen (O2) 5. The exhaust gas from car engines pass through catalytic converters
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these suns move closer together the radiant shine would be the valence. The closer they get the ray of light overlaps and they share light. If an atom can share valence electrons it can form a bond. Two hydrogen atoms make hydrogen molecule‚ two oxygen atoms make an oxygen molecule‚ and two hydrogen atoms
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