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50 "cm"^3 of hydrogen is collected over ...

`50 "cm"^3` of hydrogen is collected over water at `17^@C` and 750 mm Hg pressure. Calculate the volume of dry gas at S.T.P. The water vapour pressure at `17^@C` is 14 mm Hg.

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Given : `V_1= 50 "cm"^3`
`T_1=17^@C`= (17+273)=290 K
`P_1`=750-14=736 mm
At STP `V_2`=?
`T_2=0^@C`= 273 K
`P_2`=760 mm
Using gas equation , we get
`(P_1V_1)/T_1=(P_2V_2)/T_2`
`V_2=(P_1V_1T_2)/(P_2T_1)`
`V_2=(736xx50xx273)/(760xx290)=45.6 "cm"^3`
`V_2=45.6 "cm"^3`
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ICSE-STUDY OF GAS LAWS -TOPIC 2 (2 Marks Questions )
  1. Convert 37 K to ""^@C

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  2. Convert -27^@C to K

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  3. Convert 27^@C to K

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  4. Convert 273 K to ""^@C

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  5. 20 mL of hydrogen gas at 15^@C is heated to 35^@C at constant pressure...

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  6. At what temperature in degree centigrade will the volume of a gas, wh...

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  7. Calculate the volume (in "cm"^3) of air expelled from a vessel contain...

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  8. To what temperature must a gas at 300 K be cooled down in order to red...

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  9. Calculate the volume of gas X at S.T.P. if it occupies 380 litres at 3...

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  10. A gas occupies 70 litres at 27^@C .What volume will it occupy at 273^@...

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  11. In Kelvin scale what is the boiling point of water

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  12. In Kelvin scale what is the melting point of water

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  13. What will be the minimum pressure required to compress 500 "dm"^3 of a...

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  14. 2 litres of a gas is enclosed in a vessel at a pressure of 760 mm Hg. ...

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  15. A cylinder of 20 litres capacity contains a gas at 100 atmospheric pre...

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  16. 561 "dm"^3 of a gas at STP is filled in a 748 "dm"^3 container. If tem...

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  17. Certain amount of a gas occupies a volume of 0.4 litre at 17^@C . To w...

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  18. Certain amount of a gas occupies a volume of 0.4 litre at 17^@C . To w...

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  19. A sample of carbon dioxide occupies 30 "cm"^3 at 15^@C and 740 mm pres...

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  20. 50 "cm"^3 of hydrogen is collected over water at 17^@C and 750 mm Hg p...

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