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Why concentration of D(2)O increases whe...

Why concentration of `D_(2)`O increases when electrolysis of water is carried out for a long period of time?

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Electrolysis of `H_(2)`O occurs at a faster rate than `D_(2)`O because bond dissociation energy of O-H bond is greater than that of O-D bond. So, electrolysis of ordinary water for a prolonged period of time results in the increase in concentration of `D_(2)`O.
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CHHAYA PUBLICATION-HYDROGEN-WARM UP EXERCISE
  1. All physical constants of heavy water are higher than the correspondin...

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  2. What amount of water should be electrolysed to get 1L of 99% pure D(2)...

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  3. Why concentration of D(2)O increases when electrolysis of water is car...

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  4. Explain why the reactions of D(2) O occur at a rate slower that the co...

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  5. How would you prepare deuterium peroxide (D(2)O(2)) ?

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  6. How will you prepare deuteroammonia (ND(3)) from N(2) ?

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  7. Write down two important uses of heavy water.

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  8. How will you prove that hypophoshporus acid (H(3)PO(2)) is a monobasic...

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  9. Sodium chloride is less soluble in heavy water than ordinary water-why...

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  10. Why is heavy water (D(2)O) injurious to human beings, animals and pla...

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  11. Some H(2)SO(4) has been added to distilled water. Explain whether this...

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  12. Explain why lather is not formed when soap is used in hard water.

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  13. It is better to use detergent than soap in hard water - explain why.

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  14. What do you understand by the term softening of hard water?

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  15. What is calgon? Which ions are rendered ineffective by calgon thereby ...

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  16. Temporary hardness caused by Mg(HCO(3))(2) cannot be removed completel...

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  17. What are the inorganic cation exchangers which are known as permutits ...

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  18. What do you understand by deionised or demineralised water?

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  19. In the preparation of deionised water how do organic cation or anion e...

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  20. How can the exhausted inorganic and organic ionexchangers be regenerat...

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