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प्रश्न
A student adds a spoon full of powdered sodium hydrogen carbonate to a flask containing ethanoic acid. List two main observations, he must note in his note book, about the reaction that takes place. Also write chemical equation foe the reaction.
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उत्तर
Two main observations about the reaction:
(i) Brisk effervescence of carbon dioxide which turns lime water milky.
(ii) It is a neutralisation reaction and heat is released
CH3COOH+NaHCO3→CH3COONa+H2O+CO2
APPEARS IN
संबंधित प्रश्न
Draw the structure for the following compound.
Ethanoic acid
Draw the structure of butanoic acid.
Give any two uses of ethanoic acid.
The substance which can produce brisk effervescence with baking soda solution is:
(a) ethanol
(b) vegetable oil
(c) vinegar
(d) soap solution(b) hydrocarbon ends directed towards the centre and ionic ends directed outwards
In a soap micelle, the soap molecules are arranged radially with the hydrocarbon ends, i.e. hydrophobic, directed towards the centre; and, ionic ends, i.e. hydrophilic, directed outwards.
A student takes Na2CO3 powder in a test tube and pours some drops of acetic acid over it. He observes:
(A) no reaction in the test tube
(B) colourless gas with pungent smell
(C) bubbles of a colourless and odourless gas
(D) white fumes with smell of vinegar
Acetic acid smells like:
(1) a banana
(2) vinegar
(3) an orange
(4) a lemon
Draw the structural formula of a compound with two carbon atoms in the following case:
An alcohol containing two carbon atoms.
Write a fully balanced equation for the folowing case:
Acitic acid is warmed with ethanol in the presence of concentrated sulpheric acid.
Which of the following substance produces brisk effervescence with baking soda solution?
Bubbles are seen in the test tube during the preparation of lime water.
