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Grade: 12

                        

A 2.24L cylinder of oxygen at N.T.P is found to develop a leakage. When the leakage was plugged the pressure dropped to 570mmof Hg. The number of moles of gas that escaped will be- A) 0.025 B) 0.050 C) 0.075 D) 0.09

2 years ago

Answers : (1)

Arun
24742 Points
							
Original pressure of Hg= 760
drop in pressure= 570
change in pressure= 760-570= 190mm
= 190/760 atm

PV= nRT
n = P V/ RT
= 190 x 2.24/ 760 x 0.821 x 273 
= 0.0249 moles 
2 years ago
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