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Absorption and Adsorption - Definition, Difference, Examples

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absorption and adsorption
00:00:08.660 00:00:08.670 some tea accidentally falls while you're
00:00:11.610 00:00:11.620 studying what is the best way to remove
00:00:14.250 00:00:14.260 it off immediately click on the right
00:00:17.040 00:00:17.050 option
00:00:26.330 00:00:26.340 yes
00:00:27.630 00:00:27.640 now watch the tissue paper suck away the
00:00:30.300 00:00:30.310 spill liquid quickly if we had used
00:00:33.689 00:00:33.699 ordinary paper the tea would not be
00:00:36.270 00:00:36.280 completely absorbed
00:00:38.750 00:00:38.760 tissue paper absorbs the liquid and
00:00:41.740 00:00:41.750 ordinary paper and solves a liquid how
00:00:46.040 00:00:46.050 are these two different let us learn
00:00:48.680 00:00:48.690 more on them
00:00:55.770 00:00:55.780 let's understand absorption and
00:00:58.640 00:00:58.650 adsorption a little better
00:01:03.689 00:01:03.699 absorption is the passage of one
00:01:06.640 00:01:06.650 substance into or through the bulk of
00:01:09.310 00:01:09.320 another medium the absorbed substance
00:01:12.610 00:01:12.620 spreads to saturate the whole of the
00:01:14.860 00:01:14.870 medium to form a solution the mixing
00:01:18.100 00:01:18.110 with the other mediums environment is so
00:01:20.440 00:01:20.450 well that one fails to recognize its
00:01:23.350 00:01:23.360 existence as a separate entity
00:01:28.970 00:01:28.980 in contrast what happens during
00:01:31.830 00:01:31.840 adsorption adsorption is the addition or
00:01:35.970 00:01:35.980 sticking together of molecules of a gas
00:01:38.790 00:01:38.800 liquid or dissolved solids to the
00:01:41.970 00:01:41.980 surface of a solid or sometimes a liquid
00:01:44.720 00:01:44.730 the molecules are loosely held by the
00:01:47.700 00:01:47.710 surface and can easily dropped off
00:01:58.770 00:01:58.780 let's see the difference between these
00:02:01.060 00:02:01.070 processes absorption is seen in calm day
00:02:05.260 00:02:05.270 examples perfume spray is absorbed by
00:02:08.800 00:02:08.810 asking crisp fingertips turn soggy
00:02:13.090 00:02:13.100 because they have absorbed moisture from
00:02:15.640 00:02:15.650 the air one substance is well soaked
00:02:19.060 00:02:19.070 into a different medium
00:02:21.630 00:02:21.640 what about adsorption here is a jar
00:02:25.510 00:02:25.520 containing a red dye dissolved in water
00:02:28.290 00:02:28.300 look what happens when a solid pellet of
00:02:31.840 00:02:31.850 carbon is dropped into the jar
00:02:33.780 00:02:33.790 well isn't that surprising the red color
00:02:38.170 00:02:38.180 has almost disappeared in the jar why
00:02:42.270 00:02:42.280 the charcoal pellet has minut pores on
00:02:46.000 00:02:46.010 its surface that caused the colored
00:02:48.040 00:02:48.050 particles stick to it the red dye
00:02:50.770 00:02:50.780 undergoes the process of adsorption
00:02:54.990 00:02:55.000 shake or warm this jar and low you get
00:02:59.680 00:02:59.690 back the red color adsorption can be
00:03:02.590 00:03:02.600 easily reversed by simple heating and as
00:03:05.530 00:03:05.540 transitory when a substance is absorbed
00:03:08.830 00:03:08.840 in a different medium
00:03:10.150 00:03:10.160 it's called absorption usually
00:03:13.560 00:03:13.570 absorption cannot be reversed by simple
00:03:16.360 00:03:16.370 means although it may also be temporary
00:03:23.260 00:03:23.270 now let's focus on adsorption by carbon
00:03:26.710 00:03:26.720 and some practical applications we could
00:03:29.950 00:03:29.960 use adsorption for such diverse things
00:03:32.530 00:03:32.540 like in deodorizing air in a
00:03:35.980 00:03:35.990 refrigerator decolorizing sugar solution
00:03:39.250 00:03:39.260 and controlling excessive acidity
00:03:42.720 00:03:42.730 activated charcoal in a gas mask
00:03:45.250 00:03:45.260 attracts toxic gas molecules allowing
00:03:48.730 00:03:48.740 the person wearing the mask to breathe
00:03:50.920 00:03:50.930 fresh air drag the carbon pellet to each
00:03:54.970 00:03:54.980 of the units displayed here one by one
00:03:57.730 00:03:57.740 and observe the reactions that take
00:04:00.160 00:04:00.170 place
00:04:08.630 00:04:08.640 you
00:04:27.400 00:04:27.410 identify whether a solid or liquid or
00:04:30.680 00:04:30.690 gas is adsorbed by carbon in all these
00:04:35.060 00:04:35.070 cases
00:04:42.970 00:04:42.980

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