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(a) Define solubility of a substance...

(a) Define solubility of a substance .How does it vary with temperature ?
(b) what do you understand by the statement " the solubility of copper sulphate in water at `20^(@)C` is 20.7 g"?
( c) what is the effect of temperature on the solubilty of solids in liquids ?

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The correct Answer is:
(b) it means that a maximum of 20.7 grams of copper sulphate can be dissolved in 100 grams of water at a temerature of `20^(@)C`
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LAKHMIR SINGH & MANJIT KAUR-IS MATTER AROUND US PURE -Exercise
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  2. Classify the following as physical or chemical changes :

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  3. (a) Define solubility of a substance .How does it vary with ...

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  4. (a) what is meant by a solution ? Give two example of solutions...

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  5. (a) Differentiate between a saturated and an unsaturated soluti...

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  6. one of the following is a solids foam , this one is :

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  7. what of the following is not an emulsion ?

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  8. One of the following does not show Tyndall effect this one is :

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  9. which one of the following is most likely to exhibit tyndall ...

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  10. Milk of magnsia is :

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  11. Which of the following represents the solubility of sugar in water at...

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  12. Which one of the following is not a chemical change ?

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  13. one of the following liquids will leave hbehind a residue on hea...

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  14. Which of following can be called a suspension ?

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  15. One of the following represents the solution of solid in a solid, this...

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  16. Rusting of an article made up of iron is called

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  17. A mixture of sulphur and carbon disulphide is

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  18. Tincture of iodine has antiseptic properties. This solution is made by...

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  19. Which of the following are physical changes? (i) Melting of iron met...

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  20. which of the following are chemical change ? (i) decaying of w...

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