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Standard VII
Chemistry
Hard Water
On decomposit...
Question
On decomposition of 0.08 mole of CaCO3, why is the number of moles of CaO and CO2 equal to 0.08 ?
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Q.
Calcium carbonate decomposes on heating according to the following equation.
C
a
C
O
3
(
s
)
⇌
C
a
O
(
s
)
+
C
O
2
(
g
)
How many moles of
C
O
2
will be obtained by decomposition of 50 g
C
a
C
O
3
?
Q.
C
a
C
O
3
(
s
)
→
C
a
O
(
s
)
+
C
O
2
(
g
)
Assuming the above reaction to be 100% complete, which of the following statements is true?
Q.
Conversion of
C
a
C
O
3
into
C
a
O
as per the reaction,
C
a
C
O
3
→
C
a
O
+
C
O
2
is an example of:
Q.
1.0 g of
C
a
C
O
3
on decomposition produces 0.56 g of CaO and the rest is
C
O
2
. The volume of
C
O
2
evolved at STP is,
Q.
Calcium carbonate decomposes on heating according to the equation
C
a
C
O
3
(
s
)
→
C
a
O
(
s
)
+
C
O
2
(
g
)
The volume of
C
O
2
obtained by thermal decomposition of 50 g of
C
a
C
O
3
at STP will be:
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