Ethanoic Acid or Acetic Acid

Q. When acetic acid reacts with sodium carbonate, gas is produced.

1. methane
2. hydrogen
3. carbon dioxide

Q.

How is Carbon dioxide prepared in a laboratory?

Q.

Which statement about ethanoic acid is correct?

1. It contains three carbon atom per molecule

2. It contains five hydrogen atoms per molecule

3. It is insoluble in water

4. It reacts with ethanol to form a sweet-smelling compound

Q. List inorganic acids.

Q.

Write the chemical equation describing fermentation of sugar.

Q.

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

Q. Name the first four members of aliphatic carboxylic acids.

Q.

Why do esters smell sweet?

Q. write three different chemical reactions showing the conversion of ethanoic acid to sodium ethanoate. Write the name of the residents and the products other than ethanoic acid and sodium ethanoate in each case

Q. Why pure acetic acid is called glacial acetic acid?

Q. Which of the following statement(s) is/are true regarding ethanoic acid?

1. It's common name is acetic acid
2. 5-8% aqueous solution of ethanoic acid is called vinegar
3. It is also known as glacial acetic acid
4. It has low melting point

Q.

Question 23.
Which among the following is not a base ?
(a) $\text{NaOH}$
(b) $\text{KOH}$
(c) ${\text{NH}}_4\text{OH}$
(d) ${\text{C}}_2{\text{H}}_5\text{OH}$

Q.

(a) What happens when ethanol is oxidised with alkaline potassium permanganate (or acidified potassium dichromate)? Write the equation of the reaction involved.
(b) Choose those compounds from the following which can turn blue litmus solution red :
$HCHO,C{H}_{3}COOH,C{H}_{3}OH,C_2{H}_{5}OH,HCOOH,C{H}_{3}CHO$
Give reasons for your choice.

Q.

IUPAC name for formic acid is ________.

Q. Question 19
Vinegar is a solution of
(a) 50% – 60% acetic acid in alcohol
(b) 5% – 8% acetic acid in alcohol
(c) 5% – 8% acetic acid in water
(d) 50% – 60% acetic acid in water

Q.

An organic compound $\left(\mathrm{A}\right)$ (molecular formula ${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_2$) was hydrolysed with $\mathrm{dilute}{\mathrm{H}}_2{\mathrm{SO}}_4$ to give a $\mathrm{carboxylic}\mathrm{acid}\left(\mathrm{B}\right)\mathrm{and}\mathrm{alcohol}\left(\mathrm{C}\right).‘\mathrm{C}’$ gives white turbidity immediately when treated with $\mathrm{anhydrous}{\mathrm{ZnCl}}_2\mathrm{and}\mathrm{conc}.\mathrm{HCl}.$ The organic compound $\left(\mathrm{A}\right)$is:

1. 

2. 

3. 

4. 

Q. The gas which is responsible for the effervescence when vinegar reacts with baking soda is _______.

1. oxygen
2. carbon dioxide
3. nitrogen dioxide
4. hydrogen

Q.

Give the name and structural formula of next homologue of HCOOH.

Q. Question 7
How can ethanol and ethanoic acid be differentiated on the basis of their physical and chemical properties?

Q. What is the product formed when excess of ethanol reacts with conc. sulphuric acid at 383 K and then the temperature of the reaction mixture is increased to 443K?

1. Ethene
2. Ethyl hydrogen sulphate
3. Ethyl Chloride
4. Ethoxy ethane

Q.

Ethanoic acid turns blue litmus solution

___

Q.

Vinegar is greyish in colour with a particular taste. Explain.

Q. Complete the following reactions and identify the nature of salts obtained (acidic, basic, or neutral). Give reasons to justify your answer.

1. $\text{H}{\text{NO}}_3+\text{NaOH}\to$
2. ${\text{CH}}_3\text{COOH}+\text{KOH}\to$
3. $\text{HCl}+{\text{NH}}_4\text{OH}\to$

Q.

(a) What would be observed by adding a $5\%$ alkaline potassium permanganate solution drop by drop to some warm ethanol in a test-tube? Write the name of the compound formed during the chemical reaction. Also, write the chemical equation of the reaction which takes place.
(b) How would you distinguish experimentally between an alcohol and a carboxylic acid on the basis of a chemical property?

Q. What is the composition of vinegar?

1. 5-8% dilute aqueous solution of ethanoic acid.
2. 10-15% dilute aqueous solution of ethanoic acid
3. 5-8% dilute aqueous solution of ethanol.
4. 10-15% dilute aqueous solution of ethanoic acid.

Q.

Give the structural formulae and IUPAC name of acetic acid. What is glacial acetic acid?

Q.

Identify the gas from the following observations:

A reddish brown gas having a pungent smell. It turns moist potassium iodide paper brown.

Q.

The acidic character in acetic acid is due to the presence of replaceable______atom in the carboxylic group.

1. $H$

2. $O$

3. $H^{+}$

4. $O^{-2}$

Q. Ethanol is warmed with ethanoic acid to form ethyl acetate in the presence of concentrated $H_{2}S{O}_4.$

1. Esterification reaction
2. Neutralisation reaction
3. Decomposition reaction
4. Double displacement reaction

Q.

A compound X (having vinegar like smell) when treated with ethanol in presence of the acid Z, gives a compound Y which has a fruity smell. The reaction is:

${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}+\mathrm{X}\stackrel{\mathrm{Z}}{\to }\mathrm{Y}+{\mathrm{H}}_2\mathrm{O}$

1. Identify Y and Z
2. Write the structural formula of X
3. Name the above reaction.