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प्रश्न
Explain the following term with example.
Reduction
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उत्तर
A chemical reaction in which a substance gains hydrogen or loses oxygen is called a reduction reaction.
E.g. In the following reaction, ethylene (ethene) is reduced to ethane.
\[\ce{\underset{\text{Ethylene}}{H2C = CH2} ->[H2][Pt/Ni] \underset{\text{Ethane}}{CH3CH3}}\]
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संबंधित प्रश्न
Ethanoic acid has a .................... odour.
(a) Rotten eggs
(b) Pungent
(c) Vinegar-like
(d) Mild
Complete the following chemical equations:
C2H5OH+CH3COOH`("conc."H_2SO_4)/`>
Complete the following chemical equations : C2H5OH + Na →
Draw the structure for the following compound:
Propanoic acid
Draw the structure of butanoic acid.
Name the gas evolved when ethanoic acid is added to sodium carbonate. How would you prove the presence of this gas?
What type of compound is formed when a carboxylic acid reacts with an alcohol in the presence of conc. H2SO4?
How would you distinguish between ethanol and ethanoic acid by chemical test?
Name the product formed and give an appropriate chemical equation for the following:
Ethanol oxidised by acidified potassium dichromate.
Name the substance used to change acetic acid to acetic anhydride?
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
On adding acetic acid to sodium hydrogen carbonate in a test tube, a student observes
(A) no reaction
(B) a colourless gas with pungent smell
(C) bubbles of a colourless and odourless gas
(D) a strong smell of vinegar
Acetic acid smells like:
(1) a banana
(2) vinegar
(3) an orange
(4) a lemon
Under what conditions does ethane get converted to ethyl alcohol?
Write three physical properties of acetic acid.
Fill in the blank with appropriate word/words.
Esterification is the reaction between carboxylic acid and ______ in presence of ____
State how the following conversions can be carried out:
Ethene to Ethyl alcohol.
When acetaldehyde is oxidized with acidified potassium dichromate, it forms ______.
A student while observing the properties of acetic acid would report that this smells like ______.
