Advertisements
Advertisements
Question
An organic compound X of molecular formula C2H4O2 gives brisk effervescence with sodium hydrogen carbonate. Give the name and formula of X.
Advertisements
Solution
The organic compound 'X' with molecular formula C2H4O2 is ethanoic acid. Formula of X (ethanoic acid) is CH3COOH.
APPEARS IN
RELATED QUESTIONS
The molecular formula of acetic acid is _________ .
(a) CH3COOH
(b) CH3 – CH3
(c) C6H6
(d) C2H4
When ethanol reacts with ethanoic acid in the presence of conc. H2SO4, a substance with fruity smell is produced. Answer the following:-
(i) State the class of compounds to which the fruity smelling compounds belong. Write the chemical equation for the reaction and write the chemical name of the product formed.
(ii) State the role of conc. H2SO4 in the reaction.
In order to study saponification reaction, we first prepare 20% solution of sodium hydroxide. If we record the temperature of this solution just after adding sodium hydroxide flakes to water and also test its nature using litmus, it may be concluded that the process of making this solution is
(A) exothermic and the solution is alkaline
(B) endothermic and the solution is alkaline
(C) endothermic and the solution is acidic
(D) exothermic and the solution is acidic
Complete the following chemical equations:
C2H5OH+CH3COOH`("conc."H_2SO_4)/`>
Name the following:
The distinctive reaction that takes place when ethanol is treated with acetic acid.
Write the formulae of methanoic acid.
Write the formulae of ethanoic acid.
Name the functional group present in an organic compound which gives brisk effervescence with NaHCO3.
propanol into propanoic acid?
Name the process in each case and write the equations of the reactions involved.
What is the physical state of CH3COOH?
Name two oxidising agents which can oxidise ethanol to ethanoic acid.
Describe one reaction of a carboxylic acid.
How is ethanoic acid obtained from ethanol? Write down the chemical equation of the reaction involved.
Give any two uses of ethanoic acid.
Consider the following organic compounds:
HCHO, C2H5OH, C2H6, CH3COOH, C2H5CI
Choose two compounds which can react in the presence of conc. H2SO4 to form an ester. Give the name and formula of the ester formed.
Consider the following organic compound:
CH3OH, C2H5OH, CH3COCH3, CH3COOH, C2H5COOH, C4H9COOC2H5, CH4, C2H6, CH3CHO, HCHO
Out of these compound:
Which compound is most likely to be sweet-smelling?
What do you observe when acetic acid is added to ethyl alcohol in the presence of sulphuric acid?
Write balanced euation for the following :
Ethane is burnt in air.
State are relevant observations for following reactant:
Addition of ethyl alcohol to acetic acid in presence of conc. H2SO4
Observe the diagram given below and answer the questions:
- Name the reactants in this reaction.
- Which gas comes out as effervescence in the bigger test tube?
- What is the colour change in the lime water?
- In the above experiment instead of sodium carbonate which chemical can be used to get same products?
- Write the use of acetic acid.
