Find out the number of reagents which can oxidise Me- O-C - HII2-NaOHIIKMnO4-H-IIITollen-s reagentIVLiAlH4VNaBH4VI NH2-NH2-NaOH

(I) Iodoform test is given by ethanal. CH_3 CHO + I_2 + NaOH→ CHI_3 + HCOONa So, I_2/ NaOH is an oxidising agent. (II) KMnO_4 is an oxidising agent which oxidi ...

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Standard XII

Chemistry

Preparation of Bromine and Iodine

Find out the ...

Question

Find out the number of reagents which can oxidise $M e - O | | C - H$
$(I) I_{2} / N a O H (I I) K M n O_{4} / H^{\oplus} (I I I) Tollen's reagent (I V) L i A l H_{4} (V) N a B H_{4}$
$(V I) N H_{2} - N H_{2} / N a O H$

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Solution

$(I)$ Iodoform test is given by ethanal.
$C H_{3} - C H O + I_{2} + N a O H \to C H I_{3} + H C O O N a$
So, $I_{2} / N a O H$ is an oxidising agent.

$(I I) K M n O_{4}$ is an oxidising agent which oxidises aldehydes to acids.
$C H_{3} - C H O + K M n O_{4} H^{+} - - \to C H_{3} - C O O H$

$(I I I)$ When a freshly prepared solution of Tollen's reagent i.e. ammoniacal silver nitrate solution, is added to aldehydes and warmed, a bright silver mirror is produced due to the formation of silver metal. The aldehydes are oxidised to their corresponding carboxylate anions.
$C H_{3} - C H O + 2 [A g (N H_{3})_{2}]^{+} + 3 O H^{-} + H_{2} O \to C H_{3} - C O O^{-} + 2 A g + 4 N H_{3} + 2 H_{2} O$

$(I V) L i A l H_{4}$ is a reducing agent.
$C H_{3} - C H O + L i A l H_{4} \to C H_{3} C H_{2} O H$

$(V) N a B H_{4}$ is a reducing agent.
$C H_{3} - C H O + N a B H_{4} \to C H_{3} C H_{2} O H$

$(V I) C H_{3} - C H O + N H_{2} - N H_{2} N a O H - --- \to C H_{3} - C H_{3} + N_{2}$
Here, reduction occurs. So, $N H_{2} - N H_{2} / N a O H$ is a reducing agent.

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Similar questions

Q. Find out number of reagents which can oxidise

M e - O | | C - H

(I) I_{2} / N a O H (I I) K M n O_{4} / H^{\oplus} (I I I) Tollen's reagent (I V) L i A l H_{4} (V) N a B H_{4} (V I) S e O_{2} / Δ

(V I I) N H_{2} - N H_{2} / N a O H

Q. Find out number of reagents which can oxidise ethanal.

i) I_{2} / N a O H i i) C r O_{3}

i i i) Tollens' reagent i v) L i A I H_{4}

v) N a B H_{4} v i) mCPBA

v i i) S e O_{2} / Δ v i i i) N H_{2} - N H_{2} / p H (4 - 6)

Q. Consider the following list of Reagents: Acidified

K_{2} C r_{2} O_{7}

, Alkaline

K M n O_{4}

C u S O_{4}, H_{2} O_{2}, C l_{2}, O_{3}, F e C l_{3}, H N O_{3}

and

N a_{2} S_{2} O_{3}

. The total number of reagents that can oxidise aqueous iodide to iodine is:

Q. Find out number of reactions in which carboxylic acid is obtained as a final product.

i . M e - O | | C - O E t H_{3} O^{+} - -- \to

i i . M e - O | | C - O - O | | C - M e i i . L A H (e x c e s s) - --------- \to i i . H_{2} O

i i i . R - \oplus N \equiv ⊖ C H_{3} O^{+} - -- \to

i v . M e - O | | C - H P C C - -- \to

v . M e - O | | C - C | | O - M e H I O_{4} - -- \to

v i . C H_{3} - C H = C H - C H_{2} C H_{3} i . O_{3} - ---- \to i i . H_{2} O_{2}

Q. Consider the following list of reagents:
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K_{2} {C r}_{2} O_{7}

, alkaline

K M n O_{4}, C u {S O}_{4}, H_{2} O_{2}, {C l}_{2}, O_{2}, F e {C l}_{2}, H {N O}_{3}

and

{N a}_{2} S_{2} O_{3}

. The total number of reagents that can oxidise aqueous iodide to iodine is:

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Find out the number of reagents which can oxidise Me−O||C−H (I)I2/NaOH(II)KMnO4/H⊕(III)Tollen's reagent(IV)LiAlH4(V)NaBH4 (VI)NH2−NH2/NaOH

Find out the number of reagents which can oxidise $M e - O | | C - H$
$(I) I_{2} / N a O H (I I) K M n O_{4} / H^{\oplus} (I I I) Tollen's reagent (I V) L i A l H_{4} (V) N a B H_{4}$
$(V I) N H_{2} - N H_{2} / N a O H$