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"We need to balance an unbalanced skelet...

"We need to balance an unbalanced skeletaal chemical equatio". Justify the statement.

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(i) Skeletal chemical equations are either self balanced or unbalanced. (ii) We need to balance the unbalanced chemical equation because off law of conservation of mass which states that "In any reaction, the total mass of each of the elements in the reactants in the same as that of the total mass of each of the respective elements in the products"
Therefore, chemical equation must be balanced in each and every chemical reaction.
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CHETAN PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS-ANSWER THE FOLLOWING
  1. What is a balanced chemical equation ?

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  2. "We need to balance an unbalanced skeletaal chemical equatio". Justify...

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  3. Giving an example list two information which make a chemical equation ...

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  4. What type of reactiion takes place when vagetable matter is converted ...

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  5. What is rust ? Write the chemical formula.

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  6. Why respiration is considered an exothermic reaction ?

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  7. What are the factors on which the rate of thermionic emission depends?

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  8. What is meant by reactants ?

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  9. What is thermo chemical reactions?

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  10. When carbon dioxide is passed through lime water

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  11. Complete the following reactions Na(2)B(4)O(7)+H(2)SO(4)+H(2)O to

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  12. What do you understand by precipitation reaction? Explain with example...

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  13. Which configuration is widely used in circuits ?

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  14. what's happened when Zinc dust is added to copper sulphate solution.?

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  15. Which is the oxidant used to purification of drinking water?

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  16. Why is potassium permangante used for cleaning of water tanks ?

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  17. Some examples of redox reaction are given. Identify the reductants and...

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  18. What is the reaction called when oxidation and reduction take place si...

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  19. Write the reaction of formation of Fe ^(2+) by the reduction Fe^(3+) b...

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  20. State two conditions necessary for rusting of iron.

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