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What is surfa...

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What is surface energy?what is the reason that surface energy is reduced when it adsorbs?

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Q. Calculate the surface area in (sq m) of a catalyst that adsorbs

10^{3} c m^{3}

of nitrogen reduced to STP per gram in order to form the monolayer. The effective area (

i n m^{2}

N_{2}

molecule on the surface is: ( surface area of

N_{2} = 1.62 \times 10^{- 15} c m^{2}

)

O n e g r a m

of charcoal adsorbs

100 m L

0.5 M C H_{3} C O O H

to form a monolayer and thereby the molarity of acetic acid is reduced to

0.49 M

. Calculate the surface area of the charcoal adsorbed by each molecule of acetic acid. Surface area of charcoal

= 3.01 \times 10^{2} m^{2} / g m

Q. Assertion :Physical adsorption of molecules on the surface requires activation energy. Reason: Because the bonds of adsorbed molecules are broken.

Q. Although nitrogen does not adsorb on a surface at room temperature, it adsorbs on the surface at

83 K

. Which one of the following statements is incorrect?

1 g

charcoal adsorbs

100 m L

0.5 M

C H_{3} C O O H

to form a monolayer.As a result molarity of acetic acid reduces to

0.49 M

. what will be the surface area covered by each molecule of acetic acid ?Given that surface area of charcoal

= 3.01 \times 10^{2} m^{2} / g

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