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(a) Example the folloeing in terms of ga...

(a) Example the folloeing in terms of gain or loss of oxygen with one example each :
(b) When copper powder is heated strongly in air, it forms copper oxide. Write a balanced chemical equation for this reaction. Name (i) substance oxidised, and (ii) substance reduced.

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The correct Answer is:
(b) `2Cu+O_(2)to2CuO (i) Cu (ii) O_(2)`
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LAKHMIR SINGH & MANJIT KAUR-CHEMICAL REACTIONS AND EQUATIONS -Exercise
  1. Give one example of an oxidiation-reduction reactin which is also: (...

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  2. (a) What is the difference between displacement and double displacemen...

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  3. (a) Example the folloeing in terms of gain or loss of oxygen with one ...

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  4. (a) Define the following in terms of gain or loss of hydrogen with one...

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  5. What is menal by (a) displacement reactinon, and (b) double displaceme...

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  6. (a) Why are decomposition reactions called the opposite of combination...

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  7. (a) What heppens when a piece of iron metal is placed in copper sulpha...

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  8. In the reaction epresented by the following equation: CuO(s) +H(2)(g...

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  9. What happens when silver nitrate solution is added to sodium chloride ...

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  10. What happens when silver chloride is exposed to sunlight ? Write a che...

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  11. What happens when a zinc strip is dipped into a copper sulphate soluti...

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  12. (a) Explain the term "corrosion" with an example. Wriite a chemical eq...

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  13. (a) Explain the term "rancidity". What damage is caused by rancidity ?...

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  14. (a) What happens when an aqueous solutin of sodium sulphate reacts wit...

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  15. The removal of oxygen from a substance is called :

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  16. In the context of redox reactions, the removal of hydrogen from a subs...

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  17. The chemical reaction involved in the corrosion of iron metal is that ...

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  18. Which term is used to indicate the development of unpleasant smell and...

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  19. In order to prevent the spoilage of potato chips, they are packed in p...

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  20. A white precipitate can be obtained by adding dilute sulphuric acid to...

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