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Byju's Answer
Standard VIII
Chemistry
Variable Valency Representing
Certain non-m...
Question
Certain non-metal X forms two oxides I and II. The mass percentage of oxygen in
I
(
X
4
O
6
)
is
43.7
which is same as that X in the
2
n
d
oxide. Find the formula of
2
n
d
oxide.
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Solution
Mass percentage of X in oxide 2
=
43.7
Mass percentage of oxygen in oxide 2
=
56.3
Hence atoms of oxygen
=
6
43.7
×
56.3
=
7.73
Atoms of X
=
4
56.3
×
43.7
=
3.1
Therefore, ratio of oxygen to X
=
7.73
3.1
=
5
2
Formula
=
X
2
O
5
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