Question

1. Chemical Formula of Formic Acid?

2. What happens when we apply baking soda on bee stung area? Why?

3. Write the complete Neutralization reaction for the above?

4. Write Saponification Reaction?

5. Write Esterification Reaction?

Answer 1

1.The chemical formula of formic acid is CH2O2.
2.Baking soda is applied on the stung area because rubbing a mild base like baking soda solution on the stung area gives relief, as it neutralises the acidic liquid injected by the bee. But when a wasp stings a person, it releases an alkaline liquid into the skin. Thus rubbing with mild acid like vinegar on the affected area gives relief.
3.Reaction for above,
=>HCOOH +NaOH =====>HCOONa +H2O
4.Saponification: Esters react in the presence of an acid or a base to give back the alcohol and carboxylic acid. This is called saponification reaction. This is reverse reaction of esterification reaction. CH3COOC2H5  + NaOH → CH3-COOH + CH3-CH2-OH
5.Esterification is a chemical reaction used for making esters. The reaction in which a Caboxylic acid combines with an alcohol in the presence of a catalyst (commonly concentrated sulfuric acid) to form an ester [CH3COOC2H5] is called Esterificatin reaction. 

Answer 2

$\huge \bf \pink{Hey \: there !! }$

(1). The chemical formula of formic acid ? .

→ The chemical formula of formic acid [ Common name ] Is HCOOH .

→ The IUPAC name of formic acid is Methanoic acid .

(2). What happens when we apply baking soda on bee stung area? Why?

→ When a honey-bee stings a person, it injects an acidic liquid called formic acid into the skin which causes immense pain and irritation. If the bee stings a person, then rubbing a mild base like baking soda solution on the stung area of the skin gives relief.

→ This is because being a base baking soda neutralizes the acid liquid injected by bee sting and cancels its effect.

3. Write the complete Neutralization reaction for the above?

→ The reaction of formic acid and baking soda :-

$HCOOH + NaHCO_3 \: \: \underline{...........}> \: \: HCOONa + CO_2 + H_2O .$

(4). Write Saponification Reaction?

→ The alkaline hydrolysis of esters ( using alkali like sodium hydroxide ) is known as saponification reaction .

→ This is because of the fact that this reaction is used for the preparation of soaps .

→ The reaction is :-

$CH_3COOC_2H_5 + NaOH \: \: \underline{...Heat...} > \: \: CH_3COONa + C_2H_5OH .$

(5). Write Esterification reaction ?

→ The reaction in which a carboxylic acid combines with and alcohol to form an ester is called esterification reaction.

→ Esterification reaction takes place in the presence of a catalyst like concentrated sulphuric acid.

→ The reaction is :-

$CH_3COOH + C_2H_5OH \: \: \underline{Conc. H_2SO_4 }> \: \: CH_3COOC_2H_5 + H_2O .$

✔✔ Hence, it is solved ✅✅.

THANKS