Chemistry
GATE CY topic:surf-ace-interfaces PYQs
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Question 64
Open questionCYNAT2 marksNeeds review
The Brunauer-Emmett-Teller (BET) surface area measurement data for adsorption of N₂ gas at 77 K on 1.0 g of an adsorbent fits into a straight line, when
is plotted against
. The slope and intercept of the straight line are
and
, respectively. The surface area (in
) of the adsorbent is ______ (rounded off to one decimal place).(Given:
of N₂ gas corresponds to
molecules and each molecule occupies
.
is the volume of gas adsorbed in
,
is
, where
is the pressure of the N₂ gas and
is equilibrium vapour pressure of liquid N₂)Log in to check the answer
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