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Why is the amount of gas collected in on...

Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas.

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A group of students carried out electrolysis of acidified water in the laboratory. By the end of the experiment two gases were collected in the test tubes at both the electrodes. The gas collected in one test tube is double the volume of gas collected in the other. Name this gas. Give reason for your answer.

Gas that can not be collected over water is:

LAKHMIR SINGH & MANJIT KAUR-CHEMICAL REACTIONS AND EQUATIONS -Exercise
  1. Write a balanced chemical equation with state symbols for the followin...

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  2. A solution of a substance ‘X’ is used for whitewashing. (i) Name t...

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  3. Why is the amount of gas collected in one of the test tubes in Activit...

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  4. Why does the colour of copper sulphate solution change when an iron na...

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  5. Give an example of a double displacement reaction.

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  6. Identify the substances that are oxidised and the substances that are ...

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  7. Which of the statements about the reaction below are incorrect? 2PbO...

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  8. Fe(2)O(3) + 2Al rarr Al(2)O(3) + 2Fe The above reaction is an exampl...

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  9. What happens when dilute hydrochloric acid is added to iron fillings? ...

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  10. What is a balanced chemical equation? Why should chemical equations be...

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  11. Translate the following statements into chemical equations and then ba...

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  12. Balance the following chemical equations: (a) HNO(3)+Ca(OH)(2)toCa(...

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  13. Write the balanced chemical equations for the following reactions: (...

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  14. Write the balanced chemical equations for the following and identify t...

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  15. What does one mean by exothermic and endothermic reactions? Give examp...

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  16. Why is respiration considered an exothermic reaction? Explain.

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  17. Why are decomposition reactions called the opposite of combination rea...

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  18. Write one equation each for decomposition reactions where energy is su...

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  19. What is the difference between displacement and double displacement re...

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  20. In the refining of silver, the recovery of silver from silver nitrate ...

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