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Calculate the molality of one litre aque...

Calculate the molality of one litre aqueous one molar NaOH solution, whose density is 0.01 g per mL.

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Weight of one litre solution = `1000 xx 1.01 = 1010 g`
Weight of one mole solute, `NaOH = 40 g mol^(-1)`
Weight of solvent, water, used in preparing solution = `1010 - 40 = 970 g`
Molarity, `m = 40/40 xx 1000/970 = 100/97 = 1.03 mol kg^(-1)`.
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AAKASH SERIES-DILUTE SOLUTIONS-EXERCISE - 1.2
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  2. What are the factor on-which solubility depends on ?

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  3. Discuss on the vapour pressure of solutiosn of solids in liquids.

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  4. Aerated water bottles are kept under cold water during summer. Why ?

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  5. What is relative lowering of vapour pressure ?

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  6. Write the units of cryoscopic constant and ebullioscopic constant?

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  7. How is osmotic pressure useful in determining molar masses?

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  8. How is the principle of reverse osmosis? Used for desalination?

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  9. The molar concentration of proton obtained by mixing equal volumes of ...

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  10. Mixing n-pentane and n-hexane, an ideal solution is formed . Subtantia...

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  11. A freash grape fruit dipped in brine solution shrinks. Why ?

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  12. Vapour pressure of beneze and toluene are 160 are 60 torr. What will b...

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  13. How water can be made boiling without heating?

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  14. Write the reason of abnormality in molar masses.

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  15. Relate the colligative properties with van't Hoff factor.

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  16. Calculate the weight aof anhydrous sodium carbonate present in 200 mL ...

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  17. Calculate the normally of 10.6 % (w/v) Na2CO3 in aqueous solutions.

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  18. How many mL of 0.1 M ferrous oxalate can reduce 10 mL of 0.2 M potassi...

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  19. 250 mL of 0.2 M NaOH and 100 mL of 0.25 M Ba (OH)(2) are mixed. Calcu...

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  20. The density of 8.653% (w/v) Na2CO3 solution is 1.018 g mL^(-1). Calcul...

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  21. 100 mL of ethanol (density 0.8g/cc) is diluted to one litre using wate...

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