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प्रश्न
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.
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उत्तर
vinegar
Vinegar can produce brisk effervescence with the baking soda solution.
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संबंधित प्रश्न
In an experiment to study the properties of ethanoic acid, a student takes about 3 mL of ethanoic acid in a dry test tube. He adds an equal amount of distilled water to it and shakes the test tube well. After some time he is likely to observe that
(A) a colloid is formed in the test tube.
(B) the ethanoic acid dissolves readily in water.
(C) the solution becomes light orange.
(D) water floats over the surface of ethanoic acid.
A gas is liberated immediately with a brisk effervescence, when you add acetic acid to sodium hydrogen carbonate powder in a test tube. Name the gas and describe the test that confirms the identity of the gas.
What is the common name of ethanoic acid?
Why is the conversion of ethanol into ethanoic acid an oxidation reaction?
Name one chemical compound which can be used to distinguish between ethanol and ethanoic acid.
What will you observe when dilute ethanoic acid and dilute hydrochloric acid are put on universal indicator paper, one by one? What does it show?
Name the reducing agent used to convert acetic acid into ethanol.
What do you observe when acetic acid is added to sodium bicarbonate?
What is the main constituent of vinegar?
Fill in the blank with appropriate word/words.
Denatured alcohol is a mixture of _____ and _______
The functional group present in acetic acid is ______.
Give reason for the following :
Ethyne is more reactive than ethane
Give balanced chemical equations for the following conversion :
Ethanoic acid to ethyl ethanote
With a labelled diagram describe in brief an activity to show the formation of ester.
Write the molecular formula of the given compound.
Ethanoic acid
Ethanoic acid turns ______ litmus to ______
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
Ethanoic acid reacts with the basic salt, sodium carbonate, to form a salt, named ______, water and carbon dioxide gas.
Reshu by mistake forgot to label the two test tubes containing Ethanol and Ethanoic acid. Suggest an experiment to identify the substances correctly? Illustrate the reactions with the help of chemical equations.
