Question

What happens when
(write chemical equation in each case)
(a) ethanol is burnt in air ?
(b) ethanol is heated with excess conc. H2SO4 at 443 K ?
(c) a piece of sodium is dropped into ethanol

Answer 1

When ethanol is burnt it produces co2 + h2o heat and light
When Ethanol is treated withh h2so4 it forms ethene +h20
3. C2h5oh + Na gives c2h5oNa

Answer 2

Here is ur answer:
(a)Ethanol is highly inflammable and it catches fire easily .It burns in air to produce carbondioxide and water vapour with lot of heat .
C2H5OH +3O2 ----------->2CO2 + 3H20 +HEAT +Light

(b)Ethanol on heating with excess of concentrated sulphuric acid at 443 k releases water molecule to form ethene ( which is an unsaturated hydrocarbon).
CH3CH2OH -----------------> CH2==CH2 + H2O
(dehydration)
(c)The sodium piece react vigrously to produce bubbles of gas.It then disappers
C2H5OH+Na ----------> C2H5Na + H20 .
IT forms sodium ethoxide

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