Understand the dehydrating property of conc. sulphuric acid. Click on the link to Watch the VIDEO explanation: Watch Video
Sulphuric acid has a great affinity for water. Lets understand it with an experiment. For this you will need beaker, cane sugar, water, spatula, conc. H2SO4 and droppers. Take a spatula of cane sugar in a beaker. Add a small amount of water into the beaker. Now slowly add conc. H2SO4 into the beaker containing sugar. The mixture starts frothing because of the heat being generated by this exothermic reaction. The black mass formed is pure amorphous carbon called as sugar charcoal. Sugar is a carbohydrate, a water and carbon compound. Stream that formed rises up creating the bubbles. Conc. H2SO4 takes away water from sugar and left behind is pure carbon. Due to the same reason it is highly corrosive on skin because it breaks down protein molecules of which skin is made of and takes away the water. Conc. H2SO4 removes water from many organic substances like sugar, paper, wood etc. It is therefore a dehydrating agent.
Sulphuric acid has a great affinity for water. Lets understand it with an experiment. For this you will need beaker, cane sugar, water, spatula, conc. H2SO4 and droppers. Take a spatula of cane sugar in a beaker. Add a small amount of water into the beaker. Now slowly add conc. H2SO4 into the beaker containing sugar. The mixture starts frothing because of the heat being generated by this exothermic reaction. The black mass formed is pure amorphous carbon called as sugar charcoal. Sugar is a carbohydrate, a water and carbon compound. Stream that formed rises up creating the bubbles. Conc. H2SO4 takes away water from sugar and left behind is pure carbon. Due to the same reason it is highly corrosive on skin because it breaks down protein molecules of which skin is made of and takes away the water. Conc. H2SO4 removes water from many organic substances like sugar, paper, wood etc. It is therefore a dehydrating agent.
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