Observe the following statements: I. Bleaching powder is used in the preparation of chloroform. II. Bleaching powder decomposes in the presence of CoCl 2 to liberate O 2 III. Aqueous KHF 2 is used in the preparation of fluorine. The correct combination is :

Question

Observe the following statements: I. Bleaching powder is used in the preparation of chloroform. II. Bleaching powder decomposes in the presence of CoCl 2 to liberate O 2 III. Aqueous KHF 2 is used in the preparation of fluorine. The correct combination is : (A) I, II and III are correct (B) Only II is correct (C) Only I and III are correct (D) Only I and II are correct

Tardigrade Admin · Accepted Answer

Reaction of ethyl alcohol with bleaching powder to form chloroform takes place as

C H_{3} C H_{2} O H + C l_{2} ⟶ C H_{3} \cdot C H O + 2 H Cl

C H_{3} C H O + 3 C l_{2} ⟶ CC l_{3} \cdot C H O + 3 H Cl

2 CC l_{3} \cdot C H O + C a (O H)_{2} ⟶ 2 C H C l_{3} + (H COO)_{2} C a

Q. Observe the following statements : I. Bleaching powder is used in the preparation of chloroform. II. Bleaching powder decomposes in the presence of CoCl2​ to liberate O2​ III. Aqueous KHF2​ is used in the preparation of fluorine. The correct combination is :

I, II and III are correct

Only II is correct

Only I and III are correct

Only I and II are correct

Reaction of ethyl alcohol with bleaching powder to form chloroform takes place as CH3​CH2​OH+Cl2​⟶CH3​⋅CHO+2HCl CH3​CHO+3Cl2​⟶CCl3​⋅CHO+3HCl 2CCl3​⋅CHO+Ca(OH)2​⟶2CHCl3​+(HCOO)2​Ca

Q. Observe the following statements :
I. Bleaching powder is used in the preparation of chloroform.
II. Bleaching powder decomposes in the presence of $C o C l_{2}$ to liberate $O_{2}$
III. Aqueous $KH F_{2}$ is used in the preparation of fluorine. The correct combination is :

Reaction of ethyl alcohol with bleaching powder to form chloroform takes place as
$C H_{3} C H_{2} O H + C l_{2} ⟶ C H_{3} \cdot C H O + 2 H Cl$
$C H_{3} C H O + 3 C l_{2} ⟶ CC l_{3} \cdot C H O + 3 H Cl$
$2 CC l_{3} \cdot C H O + C a (O H)_{2} ⟶ 2 C H C l_{3} + (H COO)_{2} C a$