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Answers
Answer:
- Hydrogen peroxide is highly reactive that can react with light or heat to produce water. To prevent it's reaction with light and heat to make water it is stored in coloured bottles so that light doesn't pass through it.
- The magnesium ribbon should be cleaned before burning in the air because the layer of magnesium oxide (which is formed due to the reaction of magnesium with air ) can be removed in order to get the desired chemical reaction. Also in order to remove the oxide layer, the presence of which slowdowns the oxidation process.
- We store copper sulphate solution in a silver vessel because silver is less reactive than copper. So no displacement reaction occurs. Silver nitrate solution is not stored in copper vessel because copper is more reactive than silver
Explanation:
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Answer:
a. Hydrogen peroxide is highly reactive that can react with light or heat to produce water. To prevent it's reaction with light and heat to make water, it is stored in coloured bottles so that light doesn't pass through it
b. Magnesium ribbon is cleaned before burning in air to remove Magnesium Oxide sticking on it as it will interfere with the reaction. To get the perfect result, Magnesium ribbon is cleaned before burning in air.
c. Copper is more reactive than silver. When Copper Sulphate is kept in silver vessel, no reaction occurs as Silver is less reactive than Copper whereas, Silver Nitrate solution shouldn't be kept in Copper vessel as Copper is more reactive than Silver and will displace Silver to give Copper Nitrate and Silver. So, Copper Sulphate is kept in silver vessel.
Cu(NO3)2 + Ag -----> Cu(NO3)2 + Ag (No change)
AgNO3 + Cu ---------> Cu(NO3)2 + Ag (Silver is displaced)
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