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Tardigrade
Question
Chemistry
Volume of CO2 obtained from complete decomposition of 20 g CaCO3 at STP is:
Q. Volume of
C
O
2
obtained from complete decomposition of
20
g
C
a
C
O
3
at STP is:
5519
216
JIPMER
JIPMER 2004
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A
2.24 litre
B
4.48 litre
C
20 litre
D
22.4 litre
Solution:
=
100
(
40
+
12
+
3
×
16
)
C
a
C
O
3
Δ
C
a
O
+
22.4
l
i
t
re
C
O
2
∵
100
g
C
a
C
O
3
, on decomposition, gives
=
22.4
litre
C
O
2
at STP
∴
20
g
C
a
C
0
3
, on decomposition, will give
=
100
22.4
×
20
=
4.48
litre
C
O
2
at STP