Question

o2 is collected over water at 20 degree celsies the pressure inside shown by the gas is 740mm of hg what is the pressure due to o2 alone if vapour pressure of h2o is 18 mm of hg at 20 degrees Celsius​

Answer 1

Explanation:

Here the total pressure of the gas in the container is 750 mm Hg

Here vapour pressure of the O

2

is 18 mm Hg

Thus, according to Dalton's law,

P

T

=P

O

2

+P

H

2

O

∴P

O

2

=P

T

−P

H

2

O

=750−18=732 mm Hg

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