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TS EAMCET 4 May 2018 Shift 1 Solved Paper
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© examsnet.com
Question : 135
Total: 160
When sodium (Na) metal is dissolved in liquid ammonia
(
N
H
3
)
,
it imparts a blue color to the solution. This blue coloration is due to
Liquid
N
H
3
[
N
a
(
N
H
3
)
x
]
+
N
a
N
H
2
[
e
−
(
N
H
3
)
x
]
−
Validate
Solution:
The blue colour of the solution is due to the formation of ammoniated electrons which absorbs energy in the visible region as shown below.
N
a
+
(
x
+
y
)
N
H
3
→
[
N
a
(
N
H
3
)
x
+
]
+
[
e
(
N
H
3
)
y
+
]
−
© examsnet.com
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