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At 298 k, which of the following gases h...

At 298 k, which of the following gases has the lowest average molecular speed?

A

`CO_(2)" at"" 0.20" " atm"`

B

`He " at " 0.40 " atm"`

C

`CH_(4) " at" " 0.80"" atm"`

D

`NO" at"" 1.00"" atm"`

Text Solution

Verified by Experts

The correct Answer is:
A
`u_(av)=sqrt((8pV)/(piM)`
`u_(av)propsqrt(p/(M))=sqrt(0.20/44)=0.067" for " CO_(2)`
`=sqrt(0.40)/(4)=0.32` for He
`=sqrt((0.80)/(16))=0.22" for " CH_(4)`
`=sqrt((1)/(30))=0.18" for "NO`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-STATES OF MATTER-Exercise 2 (Miscellaneous Problems)
  1. For the non-zero volume of the molecules, real gas equation for n mol ...

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  2. A 34.0 L cylinder contains 212" g"O(2) gas 27^(@)C. What mass of O(2)...

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  3. At 298 k, which of the following gases has the lowest average molecula...

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  4. Select the correct statements.

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

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

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

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  8. A gas at a pressure of 5.0 atm is heated from 0^(@)C to 546^(@)C and s...

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

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  10. Which assumption of kinetic molecular theory is not followed when a re...

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  11. A 100 mL flask contained H(2) at 200 Torr, and a 200 mL flask containe...

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  12. A flask containing 12 g of a gas relative molecular mass 120 at a pres...

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  13. Four gases PQ,R and S have almost same values of 'b' but their 'a' val...

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  14. Equal masses of H(2), O(2) and methane have been taken in a container ...

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  15. Which of the following properties of liquids arises(s) due to the mole...

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  16. Pick out the false statement.

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  17. Water boils at lower temperature on high altitude because:

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  18. Explain why cooking is faster in a pressure cooker.

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  19. Viscous force is represented as F=etaA(dv)/(dx). Where,eta is proporti...

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  20. On the top of a mountain, water boils at

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