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Degree of hardness of a water sample is ...

Degree of hardness of a water sample is 100ppm. 50 ml of standard soap solution is added to one kilogram of hard water sample. Calculate the degree of hardness of the resulting water sample. (one ml of soap solution is 0.001 g `CaCO_3`).

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AAKASH SERIES-HYDROGEN AND ITS COMPOUNDS-SUBJECTIVE EXERCISE -2 (SHORT ANSWER TYPE QUESTIONS)
  1. What is meant by hardness of water? How many types are there?

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  2. Describe permutit process for removal of hardness.

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  3. Which salts are responsible for temporary hardness? Explain the remova...

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  4. How is deionised water prepared? Explain the principle with equations.

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  5. Explain the disadvantages of hard water.

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  6. Describe the preparation of heavy water by multi-stage electrolysis pr...

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  7. What is deuterolysis? Write the reactions of D2O with Mg3 N2, Ca3P2, A...

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  8. Write the following physical quantity values of heavy water : Freezing...

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  9. Explain the reaction of heavy water with Na, Na2O, N2O5 and Al4C3

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  10. Give four uses of heavy water.

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  11. What is the difference between hydrolysis and hydration. Give examples...

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  12. Why D2O cannot be used as drinking water ?

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  13. Calculate the weight of ordinary water that contains Avogadro number o...

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  14. A hard water sample contains calcium chloride only degree of hardness ...

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  15. One kilogram of hard water sample contains 5 xx 10^(-4) mol of magnes...

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  16. Degree of hardness of a water sample is 100ppm. 50 ml of standard soap...

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  17. 10 kg of a sample of water contains 6 g of magnesium sulphate. Calcula...

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  18. 50 ml of water has degree of hardness 160ppm. If a standard soap solut...

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  19. One litre water has 81 mg of calcium bicarbonate and 95 mg of magnesiu...

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  20. A hard water sample contains magnesium bicarbonate only. 100 ml of the...

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