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Decarboxylation

Assertion : ...

Question

Assertion : $H_{3} B O_{3}$ is monobasic Lewis acid but its salt $N a_{3} B O_{3}$ exists. Reason: $H_{3} B O_{3}$ reacts with $N a O H$ to give $N a_{3} B O_{3}$ in ethyl alcohol.

A

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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B

Both Assertion and Reason are correct, but Reason is not the correct explanation for Assertion

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C

Assertion is correct, but Reason is incorrect

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D

Assertion is incorrect, but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Inspite of the fact that Boric acid $H_{3} B O_{3}$ being a monobasic lewis acid, it's salt $N a_{3} B O_{3}$ exists.

Reason- $H_{3} B O_{3} + N a O H + E t h y l a l c o h o l$

$H_{3} B O_{3} + 3 C_{2} H_{5} O_{H} ⟶ (C_{2} H_{5})_{3} B O_{3} + 3 H_{2} O$

$(C_{2} H_{5})_{3} B O_{3} + 3 N a O H ⟶ N a_{3} B O_{3} + 3 C_{2} H_{5} O H$

$H_{3} B O_{3} + 3 N a O H + 3 C_{2} H_{5} O H - -------- \to N a_{3} B O_{3} + 3 H_{2} O$

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Similar questions

H_{3} B O_{3}

is monobasic Lewis acid but salt

{N a}_{3} B O_{3}

H_{3} B O_{3}

N a O H

{N a}_{3} B O_{3}

.

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

CaO

formed by decomposition of

{CaCO}_{3}

{SiO}_{2}

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Q. Assertion: The compressibility factor for

H_{2}

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

H e

can be derived from Van der Waal's equation.

Assertion (A) Like bromination of benzene, bromination of phenol is also carried out in the presence of Lewis acid.
Reason (R) Lewis acid polarises the bromine molecule.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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