Advertisements
Advertisements
प्रश्न
When zinc powder is added to acetic acid ______________
(a) the mixture becomes warm
(b) a gas is evolved
(c) the colour of the mixture becomes yellow
(d) a solid settles at the bottom
Advertisements
उत्तर
A gas is evolved.
Zn + 2CH3COOH → Zn (CH3COO)2 + H2
APPEARS IN
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)/`>
Fill in the blanks from the choices given within brackets:
The basicity of acetic acid is-------- (3, 1, 4).
What type of compound is formed when a carboxylic acid reacts with an alcohol in the presence of conc. H2SO4?
Vinegar is a solution of about:
(a) 5 to 8 per cent ethanoic acid in alcohol
(b) 5 to 8 per cent ethanoic acid in water
(c) 50 to 80 per cent ethanoic acid in water
(d) 50 to 80 per cent ethanoic acid in alcohol
Give the structural formulae of acetic acid.
What do you notice when acetic acid reacts with litmus?
What do you observe when acetic acid is added to a neutral FeCl3 solution?
A student puts a drop of acetic acid first on a blue litmus paper and then on a red litmus paper. He would observe that
(A) the red litmus paper turns colourless and there is no change in the blue litmus paper.
(B) the red litmus paper turns blue and the blue litmus paper turns red.
(C) there is no change in the red litmus paper and the blue litmus paper turns red.
(D) there is no change in the blue litmus paper and the red litmus paper turns blue.
Name the functional group present in the following compound:
C2H5CHO
On adding NaHCO3 to acetic acid, a gas is evolved which turns lime water milky due to the formation of:
(1) Calcium bicarbonate
(2) Calcium hydroxide
(3) Calcium carbonate
(4) Calcium acetate
Explain the following term with example.
Reduction
Under what conditions does ethane get converted to ethyl alcohol?
Rewrite the following statement by selecting the correct option.
The formula of ethanoic acid is _____________.
Assertion (A): Esterification is a process in which a sweet-smelling substance is produced.
Reason (R): When esters react with sodium hydroxide an alcohol and sodium salt of carboxylic acid are obtained.
Distinguish between esterification and saponification reactions with the help of chemical equations for each.
CH3–CH2–CHO : propanal : : CH3–COOH : _______
Bubbles are seen in the test tube during the preparation of lime water.
Anita added a drop each of diluted acetic acid and diluted hydrochloric acid on pH paper and compared the colors. Which of the following is the correct conclusion?
Give the balanced chemical equation of the following reaction:
Neutralization of NaOH with ethanoic acid.
