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Byju's Answer
Standard IX
Chemistry
Law of Reciprocal Proportions
Weight of oxy...
Question
Weight of oxygen in
F
e
2
O
3
and FeO is in the ratio of :
A
3
:
2
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B
1
:
2
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C
2
:
1
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D
3
:
1
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Solution
The correct option is
B
3
:
1
F
e
2
O
3
=
48
g
oxygen
F
e
O
=
16
g
oxygen
ratio of oxygen in
F
e
2
O
3
:oxygen in
F
e
O
=
3
:
1
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0
Similar questions
Q.
Weight of oxygen in Fe
2
O
3
and FeO is in the simple ratio of
Q.
A
3
:
2
molar ratio mixture of
F
e
O
and
F
e
2
O
3
react with oxygen to produce a
2
:
3
molar ratio mixture of
F
e
O
and
F
e
2
O
3
. Find the mass (in g) of
O
2
gas required per mole of the initial mixture.
Q.
The standard enthalpy of formation of
F
e
O
and
F
E
2
O
3
is
−
65
k
c
a
l
m
o
l
−
1
and
−
197
k
c
a
l
m
o
l
−
1
respectively mixture of two oxides contains
F
e
O
and
F
e
2
O
3
in the mole ratio
2
:
1
. If by oxidation, it is changed into a
1
:
2
mole ratio mixture, how much of thermal energy will be released per mole of the initial mixture?
Q.
The standard enthalpy of formation of
F
e
O
and
F
e
2
O
3
is
−
65
k
c
a
l
m
o
l
−
1
and
−
197
k
c
a
l
m
o
l
−
1
respectively. If a mixture containing
F
e
O
and
F
e
O
3
in
2
:
1
mole ratio on oxidation is changed into
1
:
2
mole ratio, thermal energy in kcal released per mole of mixture will be :
Q.
The standard enthalpy of formation of
F
e
O
and
F
e
2
O
3
is
−
65
k
c
a
l
m
o
l
−
1
and
−
197
k
c
a
l
m
o
l
−
1
respectively. If a mixture containing
F
e
O
and
F
e
O
3
in
2
:
1
mole ratio on oxidation is changed into
1
:
2
mole ratio, thermal energy in kcal released per
6
mole of mixture will be (nearest integer)____________.
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