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Answer:
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1 Since copper is more reactive than silver, it will displace silver from its solution and form copper nitrate which will go in solution. In doing this the vessel of copper get dissolved to make copper nitrate. Hence we can not store silver nitrate in copper vessel.
2. Gold and silver are the least reactive metals in the rectivity series, hence can not bond with oxygen easily. Therefore they both can not get corroded easily.
3. Blue color of CuSO4 fades when zinc rod is dipped in it. This happens because zinc is higher up in the reactivity series than copper. So zinc reacts with the solution displacing copper to form ZnSOand the Cu metal gets deposited over the rod.
4. Respiration is a special form of burning fuel. It involves the burning of sugar with oxygen, within the cells of every living organism to produce the energy needed for all the reactions of life along with water and carbon dioxide as waste products. Respiration is another exothermic reaction.
5. Photochemical is caused by the chemical reaction of light. It's initiated by the absorption of energy in the form of light. ... When a picture is taken, the silver salts in the photographic film absorb light and chemically change into metallic silver, which produces a dark image on the negative when the film is developed.
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- It will react with the copper metal to form unwanted products
- These are noble metals, do not react with oxygen, hence don't corrode
- It leads to formation of Zinc Sulphate and copper metal, thus the copper sulphate breaks down, and blue colour starts fading
- Because it involves the absorption of heat energy. (I think the question is wrong, it's supposed to be exothermic)
- Because the different intensity of light reflected from objects causes uneven decomposition in different regions based on intensity of light, forming an image.
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