Tardigrade
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Tardigrade
Question
Chemistry
The correct solubility order is/are I. CaCO3>SrCO3>BaCO3 II. Li2CO3 < Na2CO3 < K2CO3 III. K2CO3 < Rb2CO3 < Cs2CO3 IV. Na2CO3>K2CO3>Rb2CO3
Q. The correct solubility order is/are
I.
C
a
C
O
3
>
S
r
C
O
3
>
B
a
C
O
3
II.
L
i
2
C
O
3
<
N
a
2
C
O
3
<
K
2
C
O
3
III.
K
2
C
O
3
<
R
b
2
C
O
3
<
C
s
2
C
O
3
IV.
N
a
2
C
O
3
>
K
2
C
O
3
>
R
b
2
C
O
3
1892
194
NTA Abhyas
NTA Abhyas 2020
The s-Block Elements
Report Error
A
II, IV
21%
B
I, IV
53%
C
III, II, IV
0%
D
I, II, III
26%
Solution:
As in case of alkali metals solubility increases down the group but decreases for alkaline earth metals.
Here the correct orders of solubility are
I.
C
a
C
O
3
>
S
r
C
O
3
>
B
a
C
O
3
II.
L
i
2
C
O
3
<
N
a
2
C
O
3
<
K
2
C
O
3
III.
K
2
C
O
3
<
R
b
2
C
O
3
<
C
s
2
C
O
3