Identify the correct statements from the foll | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The explanations of the given statements are as follows:$(i)$ $H_3BO_3$ (orthoboric acid) is a monobasic Lewis acid. In aqueous solution,it accept

Vedclass · Accepted Answer

$i, ii, iii$

Vedclass · Answer

(A) The explanations of the given statements are as follows:$(i)$ $H_3BO_3$ (orthoboric acid) is a monobasic Lewis acid. In aqueous solution,it accepts an $OH^-$ ion from water to form $[B(OH)_4]^-$ and releases $H^+$,acting as a Lewis acid.$B(OH)_3 + H_2O \rightleftharpoons [B(OH)_4]^- + H^+$$(ii)$ The correct formula for borax is $Na_2[B_4O_5(OH)_4] \cdot 8H_2O$. This statement is correct.$(iii)$ $NaBH_4$ (sodium borohydride) is a well-known reducing agent used in organic chemistry to reduce aldehydes and ketones to alcohols. This statement is correct.Since all three statements are correct,the correct option is $A$.

List-$I$ (Compounds)	List-$II$ (Uses)
$A$. Boron-$10$	$I$. Antiseptic
$B$. Borax	$II$. Bullet proof vest
$C$. Boron-fibre	$III$. Neutron absorber
$D$. Orthoboric acid	$IV$. Heat resistance glasses

Identify the correct statements from the following:
$i$. $H_3BO_3$ is a monobasic acid.
$ii$. The correct formula of borax is $Na_2[B_4O_5(OH)_4] \cdot 8H_2O$.
$iii$. $NaBH_4$ is a reducing agent.

Similar Questions

Which one of the following statements is not correct?

Diborane reacts with ammonia under different conditions to give a variety of products. Which one among the following is not formed in these reactions?

Match the following compounds in List-$I$ with their uses in List-$II$:
List-$I$ (Compounds) List-$II$ (Uses)
$A$. Boron-$10$ $I$. Antiseptic
$B$. Borax $II$. Bullet proof vest
$C$. Boron-fibre $III$. Neutron absorber
$D$. Orthoboric acid $IV$. Heat resistance glasses

Choose the incorrect statement/reaction.

In which of the following reactions is hydrogen one of the products?
$i$. $2NaBH_4 + I_2 \longrightarrow$
$ii$. $2BF_3 + 6NaH \xrightarrow{450 \ K}$
$iii$. $4BF_3 + 3LiAlH_4 \longrightarrow$
$iv$. $3B_2H_6 + 6NH_3 \xrightarrow{\text{heat}} 2B_3N_3H_6 + 12H_2$

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Identify the correct statements from the following:$i$. $H_3BO_3$ is a monobasic acid.$ii$. The correct formula of borax is $Na_2[B_4O_5(OH)_4] \cdot 8H_2O$.$iii$. $NaBH_4$ is a reducing agent.