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Twenty grams of a substance were dissolv...

Twenty grams of a substance were dissolved in 500ml. Of water and the osmotic pressure of the solution was found to be 600mm of mercury at `15^(@)"C".` Determine the molecular weight of the substance.

A

1198

B

500

C

1200

D

1000

Text Solution

Verified by Experts

The correct Answer is:
A
`M=(W_BRT)/piV=(20xx0.0821xx288xx1000)/((600//760)xx500)`=1198
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NCERT FINGERTIPS-SOLUTIONS -Colligative Properties And Determination Of Molar Mass
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  7. A 5% solution of cane sugar (molecular weight=342) is isotonic with 1%...

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  8. Which of the following statements is correct about diffusion and osmos...

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  9. 10% solution of urea is isotonic with 6% solution of a non-volatile so...

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  10. A solution containing 10.2 g of glycrine per litre is found to be isot...

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  11. What will be the osmotic pressure in pascals exerted by a solution pre...

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  12. Osomotic pressure of a solution containing 2 g dissolved protein per 3...

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  13. Twenty grams of a substance were dissolved in 500ml. Of water and the ...

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  14. Which of the following statements is not correct ?

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  15. Grapes placed in three beakers X ,Y and Z containing different type of...

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  16. A plant cell shrinks when it is kept in

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  17. Which of the following statements is correct ?

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  18. For carrying reverse osmosis for desalination of water the material us...

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  19. Which of the following is not an industrial or biological importance o...

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  20. Match the column I with column II and mark the appropriate choice.

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