1.

22 g of dry ice is placed in an evacuated bottle of 1 litre capacity and tightly stoppered. What would be the pressure (in atm) inside the bottle, whenit is heated to 37^(@)C ?

Answer»

12.71
127.1
1.27
0.127

Solution :`W=22g CO_(2),V=1` litre, M=44,
`T=37+273=310` K, P=?
Dry ice is solid `CO_(2)` which when HEATED in an evacuated bottle it is CONVERTED into gaseous `CO_(2)`
From ideal GAS equation
`PV=(WRT)/MimpliesP=(22xx0.082xx210)/(44xx1)=12.71` atm
Now PRESSURE inside the bottle is 12.71 atm.


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