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3.2 g of S is heated to occupy a volume ...

`3.2 g` of S is heated to occupy a volume of `780 ml` at `450^(@)C` and `723 mm` pressure. Formula of sulphure is

A

`S_(2)`

B

`S_(4)`

C

`S_(6)`

D

`S_(8)`

Text Solution

Verified by Experts

The correct Answer is:
D
Given, `p=(723//760)atm,w=3.2g`
`T=273+450 =723KrArrV=(780//1000)L`
`:." "pV=(w)/(M)RT`
`:." "M=(3.2xx0.0821xx760xx1000xx723)/(723xx780)=256`
`:.` 32 g sulphur has 1 atom of S.
`:.` 256 g S has 256//32=8 atoms of S
` :.` Molecular formula = `S_(8)`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-STATES OF MATTER-Exercise 2 (Miscellaneous Problems)
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  2. The compressibility of a gas is less than unity at STP, therefore,

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  3. 3.2 g of S is heated to occupy a volume of 780 ml at 450^(@)C and 723 ...

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  8. The compressibility factor of gases is less than unity at STP. Therefo...

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  9. For the non-zero volume of the molecules, real gas equation for n mol ...

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  12. Select the correct statements.

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  13. Which of the following gases follows non-ideal behaviour?

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  14. To liquefy gaseous substances whose critical temperatures are below ro...

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  15. NH(3) gas is liquefied more easily than N(2). Hence

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  17. At 400 K, the root mean square (rms) speed of a gas X (molecular weigh...

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