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(a) What is a balanced chemical equation...

(a) What is a balanced chemical equation ? Why should chemical equations be balanced ?
(b) Aluminium burns in chlorine to from aluminium chloride `(AlCl_(3)).` Write a balanced chemical equation for this reaction.
(c ) Fotassium metal reacts with water to give potassium hydroxide and hydrogen gas. Write a balanced chemical equation for this reaction

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The correct Answer is:
`(b)2Al+3Cl_(2)to2ACl_(3)" "(c)2K+2H_(2)Oto2KOH+H_(2)`
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LAKHMIR SINGH & MANJIT KAUR-CHEMICAL REACTIONS AND EQUATIONS -Exercise
  1. When hydrogen is passed over copper oxide, copper and steam are formed...

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  2. (a) What are the various ways in which a chemical equation can be made...

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  3. (a) What is a balanced chemical equation ? Why should chemical equatio...

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  4. (a) Explain with example, how the physical states of the reactants and...

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  5. Write any two observations in an activity which may suggest that a che...

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  6. (a) Aluminium hydroxide reacts with sulphuric acid to from aluminium s...

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  7. Write the balanced equations for the following reactions, and add the ...

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  8. Carbon monoxide reacts with hydrogen under certain conditions to from ...

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  9. (a) Potassium chlorate (KClO(3)) on heating forms potassium chloride a...

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  10. (a) Substitute formulae for names and balance the following equation: ...

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  11. Ammonia reacts with oxygen to from nitrogen and water. Write a balance...

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  12. Write a balanced chemical equation for the process of photosynthesis g...

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  13. Write the balanced equation for the following chemical reactions. (i...

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  14. When potassium nitrate is heated. It decomposes into potassium nitrite...

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  15. (a) What is meant by a chemical reaction ? Explain with the help of an...

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  16. (a) State the various characteristics of chemical reactions. (b) sta...

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  17. (a) What do you understned by exothermic and endothermic reactions ? ...

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  18. One of the following does not happen during a chemical reaction. This ...

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  19. Which of the following does not involve a chemical reaction?

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  20. You are given the solution of lead nitrate. In order to obtain a yello...

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