Reaction of Ethanoic Acid with Metals and Bases

Q. The reaction of ethanol with ethanoic acid in presence of concentrated $H_{2}S{O}_4$, produces _____.

1. an ester
2. a carboxylic acid
3. an alcohol
4. an aldehyde

Q.

What happens when (Give equations of the chemical reaction)
(i) Sodium ethanoate is heated with soda lime.
(ii) Ethanoic acid is warmed with methanol in presence of concentrated sulphuric acid.

Q.

An organic compound A (molecular formula $C_2{H}_4{O}_2)$ reacts with Na metal to form a compound B and evolves a gas which burns with a pop sound. Compound A on treatment with an alcohol C in the presence of a little of concentrated sulphuric acid forms a sweet-smelling compound D (molecular formula $C_2{H}_6{O}_2)$ . Compound D on treatment with NaOH solution gives back B and C. Indentity A, B, C and D.

Q.

(a) What happens when ethanoic acid reacts with sodium hydroxide? Write the equation of the reaction involved.
(b) What happens when vegetable oils are hydrogenated? Name the catalyst used.
(c) What is the advantage of detergents over soaps for washing clothes? Also, state one disadvantage.

Q.

A volatile acid X is formed when sodium chloride reacts with concentrated sulphuric acid. Name this volatile acid.

1. Hypochlorous acid

2. Carbonic acid

3. Nitric acid

4. Hydrochloric acid

Q.

Esters are sweet-smelling substances and are used in making perfumes. Suggest some activity and the reaction involved in the preparation of an ester with a well-labelled diagram.

Q. Enzyme involved in the conversion of glucose into ethanol is ___________.

1. Invertase
2. Molasses
3. Zymase
4. Fructose

Q. Acetic acid reacts with a sodium compound to release a gas which turns limewater milky. What might be the sodium compound?

1. Sodium chloride
2. Sodium hydroxide
3. Sodium carbonate
4. Sodium bicarbonate

Q. What do you notice when acetic acid reacts with
(a) litmus, (b) metals, (c) alkalies, (d) alcohol?

[4 MARKS]

Q.

A salt of volatile acid X reacts with concentrated sulphuric acid to form sodium bisulphate and acetic acid. What is X?

1. Sodium hydroxide

2. Sodium acetate

3. Sodium sulphate

4. Sodium carbonate

Q. The X and Y in the given equation respectively are:
$C{H}_{3}COO{C}_2{H}_5\stackrel{NaOH}{\to }X+Y$

1. Ethanol and Sodium acetate
2. Methanol and Acetic acid
3. Ethanol and Methanoic acid
4. Ethanol and Ethanoic acid

Q.

What happens when (Give equations of the chemical reaction)
(i) A pinch of sodium hydrogencarbonate is added to ethanoic acid.
(ii) Ethanol is oxidised with acidified potassium dichromate.

Q. Vinay was trying to create sodium acetate, he added ethanoic acid and ‘A’ in an open vessel. He also added few drops of concentrated $H_{2}S{O}_4$ to this and was surprised when the solution gave a sweet effervescence. So he repeated this experiment in a closed vessel and obtained ethyl acetate. Then he added ‘B’ and created sodium acetate. Find A and B.

1. A - Ethanol; B - Washing soda
2. A - Sodium acetate; B - Ethanol
3. A - Ethanol; B - Sodium hydroxide
4. A - Ethanol; B - Baking powder

Q.

Write the word equation for the following and identify the reactants and the products in the reaction.

Adding a small amount of dilute hydrochloric acid to sodium carbonate.

Q.

What do you notice when acetic acid reacts with
(a) litmus,

(b) metals,
(c) alkalies,

(d) alcohol?

Q. Sodium acetate is formed when ___ reacts with ethanoic acid

1. Sodium hydroxide
2. NaOH
3. Lye
4. Caustic soda

Q.

The process which is used to prepare soap is known as:

1. Saponification

2. Hydrolysis

3. Decomposition

4. Combustion

Q.

State one relevant observation for the addition of ethyl alcohol to acetic acid in the presence of concentrated sulphuric acid.

Q. The reaction between acetic acid and base sodium hydroxide gives ________ and water.

1. $C{H}_{3}COONa$
2. $C_2{H}_5$
3. $C{H}_{3}OH$
4. $C{H}_{3}C{H}_{2}OH$

Q. Vinay was trying to create sodium acetate, he added ethanoic acid and ‘A’ in an open vessel. He also added few drops of concentrated $H_{2}S{O}_4$ to this and was surprised when the solution gave a sweet effervescence. So he repeated this experiment in a closed vessel and obtained ethyl acetate. Then he added ‘B’ and created sodium acetate. Find A and B.

1. A - Ethanol; B - Washing soda
2. A - Ethanol; B - Sodium hydroxide
3. A - Ethanol; B - Baking powder
4. A - Sodium acetate; B - Ethanol

Q. Fill in the blanks with suitable word for the statement given below:

Q. (a) What type to compound is CH₃COOH?
(b) What substance should be oxidised to prepare CH₃COOH?
(c) What is the physical state of CH₃COOH?
(d) State one advantage of soaps over detergents.