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प्रश्न
A student adds a few drops of ethanoic acid to test tubes X, Y and Z containing aqueous solutions of sodium chloride, sodium hydroxide and sodium carbonate, respectively. If he now brings a burning splinter near the mouth of the test tubes immediately after adding ethanoic acid in each one of them, in which of the test tube or test tubes the flame will be extinguished?
(A) X and Y
(B) Y and Z
(C) X and Z
(D) only Z
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उत्तर
The chemical reactions in test tubes X, Y and Z can be written as:-
Test tube X:-
CH3COOH + NaCl →No reaction
Test tube Y:-
CH3COOH + NaOH →CH3COONa + H2O
Test tube Z:-
2 CH3COOH + Na2CO3 →2 CH3COONa + CO2 + H2O
Thus, the flame will be extinguished when test tube Z is brought near a burning splinter due to evolution of carbon dioxide gas, which does not support combustion.
Hence, the correct option is D.
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संबंधित प्रश्न
Write three different chemical reactions showing the conversion of ethanoic acid to sodium ethanoate. Write balanced chemical equation in each case. Write the name of the reactants and the products other ethanoic acid and sodium ethanoate in each case.
A student takes about 6 ml of distilled water in each of the four test tubes P, Q, R and S. He then dissolves an equal amount of four different salts namely, sodium chloride in 'P', potassium chloride in 'Q', calcium chloride in 'R' and magnesium chloride in 'S'. Next, he then adds 10 drops of soap solution to each test tube and shakes its contents. The test tubes in which scum (insoluble substance) is formed with soap are:
(A) P and Q
(B) Q and R
(C) R and S
(D) Q and S
Complete the following chemical equations :CH3COOH+NaOH→
Give a reason for Conductivity of dilute hydrochloric acid is greater than that of acetic acid
Describe a test for carboxylic acid.
What happens when ethanoic acid reacts with sodium hydroxide? Write equation of the reaction involved.
A neutral organic compound is warmed with some ethanoic acid and a little of conc. H2SO4. Vapours having sweet smell (fruity smell) are evolved. What type of functional group is present in this organic compound?
Name the functional group present in the following compound:
C2H5CHO
Which of the following observations is true about dilute solution of acetic acid?
(A) It smells like vinegar and turns red litmus blue
(B) It smells like onion and turns blue litmus red
(C) It smells like orange and turns red litmus blue
(D) It smells like vinegar and turns blue litmus red
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
