electrode‚ the cathode‚ which is the pure copper‚ and the positive electrode‚ the anode‚ which is the impure copper are both placed in a solution of copper sulfate. After a great amount of time‚ the electrical supply pulls electrons off of the copper atoms at the anode and the positive copper ions are attracted to the cathode‚ where they turn into copper atoms. The size of the pure copper cathode then increases‚ while the anode dwindles away. The Oxidation occurred can be seen in this equation‚Cu2+ +
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placed on the opposite end of the tank to act as the cathode‚ or negative terminal. The tanks are filled with an acidic copper sulfate solution‚ which acts as an electrical conductor between the anode and cathode. When an electrical current is passed through each tank‚ the copper is stripped off the anode and is
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http://www.plating.com/platingtechnical/poorsdhesion.htm POOR ADHESION Poor adhesion results in the chrome deposit separating from the substrate. This can occur as either peeling or blistering of the chromium layer‚ and can happen immediately as the part comes out of the bath‚ or later when it is put into service. Unfortunately‚ a viable nondestructive test for adhesion is not available. An inconclusive tests is to immerse the part in boiling water AP‚ until it is up to temperature‚ then immediately
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James Musk 2011-04-07 Science Mrs Trennor Research Assignment: The Chloralkali Industry The chloralkali process is responsible for the production of chlorine gas (Cl2)‚ sodium hydroxide (NaOH) hence the name chloralkali. The process is also responsible for the production
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The first hypothesis to answer was‚ ’What affect does water temperature have on the rate of corrosion of iron in sea water?’ The assumed answer was that ’ As temperature decreases‚ the rate of corrosion will decrease.’ Secondly‚ ’Which sacraficial anode would protect and shield the Iron‚ resulting in a decrease in corrosion levels‚ within salt water?’ The hypothesised answer was that the more active a metal then iron is ‚the greater protection it would provide.’ Corrosion is a redox reaction where
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Hydrogen Summary * This is how hydrogen fuel cells work: 1. Gas stored in tanks 2. Atoms reach anode 3. Become hydrogen ion and a free electron 4. Ion goes through electrolyte layer 5. Hydrogen ion passes‚ but free electron does not 6. Free electron runs through external circuit from anode (-) to cathode (+) 7. Current of electrons creates electricity 8. Hydrogen ion enters cathode and combines with oxygen to become water which is better for the ecosystem because
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potential is 1.3 V‚ estimate the work function of the metal. How would the photo cell respond to high intensity (105 Wm-2) red light of wavelength 6328 A produced by a He - Ne laser? Q.7. Plot a graph showing the variation of photoelectric current with anode potential for two light beams of same wavelength but different intensity. Q.8. Which experiment proved the existence of De’Broglie waves? Q.9. Two metals “X” and “Y” have work functions 2ev and 5ev respectively. Which metal will emit electrons
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Pre – Lab Questions 1. A decomposition reaction may be defined as any reaction in which one reactant‚ a compound‚ breaks down to give two or more products. Write the balanced chemical equation for the decomposition of water to its elements. 2H2O(l) 2H2(g) + O2(g) 2. (a) Assign oxidation states to the hydrogen and oxygen atoms in each substance in the above chemical equation. The oxidation state of H2(g) and O2(g) is zero‚ because they are in their normal state. (b) Based
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EXPERIMENT NO. 1 AIM :- To study wave guide components. APPARATUS REQUIRED :- Flanges‚ Twisted wave guide‚ wave guide tees‚ Directional Coupler‚ Attenuator‚ Isolators‚ Circulators‚ Matched terminator‚ Slide screw tuner‚ Slotted Section‚ Tunable probe‚ Horn antennas‚ Movable Short‚ Detector mount. THEORY:- A pipe with any sort of cross- section that could be used as a wave guide or system of conductors for carrying electromagnetic wave‚ is called a wave guide in which the waves are truly guided.
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Printed Ckt Board Types of PCB (I) Single Side (II) Double Side (III) Multi Layer (V) Flexible PCB * Single Side ( 1 layer ) :- The insulating substrate contains ckt pattern on only one side. Which is called as solder side. The other side is called component side. * Double Side (2 layer) :- Double side means the ckt pattern is present on the either side of the insulating material ckt pattern both on component side & solder side. * Flexible Cards :- Flexible
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