Question

A compound A (C2H4O2) reacts with Na metal to form a compound B and evolves a gas which burn with a pop sound Compound A' on treatment with an alcohol C" in presence of an acid forms a Sweet smelling compound D (C4H8O2) On addition of NaOH to D' gives back B and C. Identify A. B, C and D write the reactions involved.

Answer 1

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CH3 COOH( ACETIC ACID)



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Answer 2

Identification of compounds 'A', 'B', 'C', and 'D'.

Given:

• Molecular formula of compound A = $C_2H_4O_2$

• Compound 'A' on reaction with sodium (Na) yields 'B'.

• Compound 'A' on reaction with alcohol 'C' yields compound 'D' with molecular formula $C_4H_8O_2$

• Compound 'D' on addition of NaOH gives 'B' and 'C'.

To find:

Compounds 'A', 'B', 'C', and D = ?

Explanation:

• From the given molecular formula the compound 'A' is identified as ethanoic acid.
• When it is made to react with sodium metal (Na), the following chemical reaction occurs:

$2CH_3COOH+2Na\rightarrow CH_3COONa+H_2$

• Form the above reaction, compound 'B' is identified as sodium acetate $(CH_3COONa)$.
• When compound 'A' which is identified as ethanoic acid reacts with ethanol it leads to the formation of $C_4H_8O_2$ which is called as ethyl ethanoate and it is a sweet smelling substance.
• The chemical equation involved is as follows:

$CH_3COOH+C_2H_5OH\rightarrow CH_3COOC_2H_5+H_2O$

• From the above equation compound 'C' and 'D' are identified as ethanol and ethyl ethanoate respectively.
• When ethyl ethanoate is made to react with NaOH, the following chemical reaction occurs:

$CH_3COOC_2H_5+NaOH\rightarrow CH_3COONa+C_2H_5OH$

Conclusion:

• From the above-given chemical equations compounds A', 'B','C' and 'D' are identified as follows:

1. Compound A: Ethanoic acid - $CH_3COOH$
2. Compound B: Sodium acetate - $CH_3COONa$
3. Compound C: Ethanol - $C_2H_5OH$
4. Compound D: Ethyl ethonate - $C_4H_8O_2$

Learn more about such concept

Identify the compound X on the basis of the reactions given below.

Also, write the name and chemical formulae of A, B and C.

+ Zn--> A + H2(g)

X + HCl ----> B + H2O

+ CH3COOH------------> C + H2O

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(a) name the compounds ch3cooh and identify the functional group (b)give a chemical test to identify this compound (c) name the gas evolved when this compound acts on carbonate. hoe would you identify this gas

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