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Byju's Answer
Standard XII
Chemistry
Introduction
H3BO3 A B2O3 ...
Question
H
3
B
O
3
375
K
−
−−
→
A
R
e
d
H
e
a
t
−
−−−−
→
B
2
O
3
H
3
B
O
3
435
K
−
−−
→
B
R
e
d
H
e
a
t
−
−−−−
→
B
2
O
3
The compounds A & B are:
A
Orthoboric acid, metaboric acid
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B
Metaboric acid, Tetra boric acid
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C
Tetra boric acid, Metaboric acid
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D
Tetra boric acid, orthoboric acid
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Solution
The correct option is
B
Metaboric acid, Tetra boric acid
H
3
B
O
3
375
K
→
H
B
O
2
r
e
d
h
e
a
t
→
B
2
O
3
H
3
B
O
3
435
K
→
H
2
B
4
O
7
r
e
d
h
e
a
t
→
B
2
O
3
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Q.
When orthoboric acid
(
H
3
B
O
3
)
is heated the residue left is:
Q.
On heating, orthoboric acid gives metaboric acid along with
.
Q.
Orthoboric acid
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B
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When orthoboric acid
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is heated, the residue is:
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