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What is solubility of a salt ? Discuss t...

What is solubility of a salt ? Discuss the effect of temperature on the solubility of sodium chloride in water.

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What is the effect of increase in temperature on the solubility of a gas in water ?

Pragya tested the solubility of three different substances at different temperatures and collected the data as given below (results are given in the following table, as grams of substance dissolved in 100 grams of water to form a saturated solution). (a) What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 grams of water at 313 K ? (b) Pragya makes a saturated solution of potassium chloride in water at 353 K and leaves the solution to cool at room temperature. What would she observe as the solution cools ? Explain. (c ) Find the solubility of each salt at 293 K . Which salt has the highest solubility at this temperature ? (d) What is the effect of change of temperature on the solubility of a salt ?

Pargya tested the solubility of four different substances at different temperatures and collected the data as given below (results are given in the following table as grams of substance dissolved in 100 grams of water to from a saturated solutin). (a) What mass of potassium nitrate would be needed to procuce a strurated solution of potassium nitrate in 50 grams of water at 313 K ? (b) Pragya makes a saturated solution of potassium chloride in water at 353 K and leaves the solution to cool at room temperature. What would she observe as the solution cools ? Explain. (c ) Find the solubility of each salt at 293 K. Which salt has the highest solubility at this twmperature? (d) What is the effect of change in temperature on the solubility of a salt ?

DINESH PUBLICATION-IS MATTER AROUND US PURE-Short Answer Questions
  1. Give an example for each of following : (a) Solid-liquid homogeneou...

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  2. List two differences between a pure substance and a mixture. Give an e...

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  3. Why is crystallisation better than evaporation for the separation of m...

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  4. Give one example each of a mixture which shows the following character...

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  5. Differentiate between an element and a compound. Categorise the follow...

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  6. Explain why , air is considered a mixture and not a compound.

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  7. Compare suspension and colloidal solution on the basis of (a) type of ...

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  8. A solution contains 50 g of sugar in 450 g of water. Calculate the con...

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  9. What is 'Tyndall effect' ? Name two mixtures which show this effect.

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  10. Give two differences between pure substances and mixture. Give one exa...

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  11. What is the difference between (i) Pure substance and mixture (ii) Col...

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  12. Compare the particle sizes in a true solution, colloidal solution and ...

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  13. Does freezing of water to ice represent a physical change ?

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  14. Discuss the role of centrifugation in removing the precipitate formed ...

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  15. How will you justify that the formation of water from hydrogen and oxy...

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  16. 4 g of a solute are dissolved in 36 g of water. What is the mass perce...

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  17. Is the mass percent of a solution same as its strength ? Justify your ...

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  18. What is solubility of a salt ? Discuss the effect of temperature on th...

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  19. Mention the following statements whether true or false : (i) The se...

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  20. 60% solution of alcohol has a volume of 70 mL. What is the volume of p...

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