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Standard XII
Chemistry
Decarboxylation
Identify the ...
Question
Identify the incorrect statement about boric acid(1) Layered polymer due to H-bonding(2) It's aqueous solution strong, lewis acid with cis-1, 2 diol(3) Obtained on heating borax(4) Gives B(OC_2H_5)_3 with C_2H_5OH
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Q.
Boric acid,
B
(
O
H
)
3
is a monobasic Lewis acid. It gives
H
+
ion in its aqueous solution as follows
B
(
O
H
)
3
+
H
2
O
⇌
[
B
(
O
H
)
4
]
−
+
H
+
,
K
a
=
5.9
×
10
−
10
. What will be the
P
H
of its
0.025
M
aqueous solution?
Q.
On strong heating, Boric acid gives
Q.
An aqueous solution of a substance gives a white precipitate on treatment with
d
i
l
.
H
C
l
which dissolves on heating. When
H
2
S
is passed through the hot acidic solution, a black precipitate is obtained. The substances are not
:
Q.
Boric acid is polymer due to:
Q.
Dicarboxylic acids react with diols to form which type of co-polymer?
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