Advertisements
Advertisements
प्रश्न
Choose those compounds from the following which can turn blue litmus solution red:
HCHO, CH3COOH, CH3OH, C2H5OH, HCOOH, CH3CHO
Give reasons for your choice.
Advertisements
उत्तर
CH3COOH (ethanoic acid) and HCOOH (formic acid) are the compounds which can turn blue litmus solution red. This happens because ethanoic acid and formic acid are the organic compounds which are acidic in nature.
APPEARS IN
संबंधित 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
Write the IUPAC names, common names and formulae of the first two members of the homologous series of carboxylic acids.
Three organic compounds A, B and C have the following molecular formulae: C4H10O
Which compound contains a carboxyl group? Write its name and structural formula.
Why is the conversion of ethanol into ethanoic acid an oxidation reaction?
What do you notice when acetic acid reacts with litmus?
What do you notice when acetic acid reacts with alkalies?
What do you notice when acetic acid reacts with alcohol?
What do you observe when acetic acid is added to ethyl alcohol in the presence of sulphuric acid?
What do you observe when acetic acid is added to a neutral FeCl3 solution?
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
Explain the following term with example.
Reduction
Explain the following term with an example.
Oxidant
Fill in the blank with appropriate word/words.
Denatured alcohol is a mixture of _____ and _______
Draw the structure formula of ethyne.
Ester is a sweet-smelling compound.
Explain the following reaction with an example.
Saponification
Bubbles are seen in the test tube during the preparation of lime water.
Give the balanced chemical equation of the following reaction:
Combustion of ethanol.
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
