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Byju's Answer
Standard XII
Chemistry
Concentration Terms
When H 2 S ...
Question
When
H
2
S
gas is passed into a mixture solution acidified with dil
H
C
l
, yellowish turbidity appears, explain.
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Solution
On passing
H
2
S
gas through dilute
H
C
l
, sulphur gas is evolved which is responsible for the appearance of yellow turbidity.
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Q.
You have been given an inorganic mixture with a knowledge that group II is absent but when
H
2
S
gas is passed into the mixture acidified with dilute
H
C
l
, yellowish turbidity appears due to presence of sulphur.
If true enter 1, else enter 0.
Q.
Assertion :Sometimes it happens that when
H
2
S
gas is passed into solutions in .dil. HCl, yellowish white turbidity appears. Reason: The yellowish turbidity is due to colloidal sulphur, formed by oxidation of
H
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by the presence of
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−
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or
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o
r
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O
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−
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H
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+
H
N
O
3
⟶
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(colloidal)
Before passing
H
2
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gas, solution is boiled so as to decompose these radicals.
Read the above assertion and reason and choose the correct option regarding it.
Q.
When
H
2
S
gas is passed into
S
O
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in aqueous solution, colloidal yellowish white turbidity appears.
Calculate the weight of this turbidity if
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L
of each gas reacts at
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.
Q.
In qualitative inorganic analysis of basic radicals, solution is prepared in dil.
H
C
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H
2
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before
H
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Turbidity dissolves when we add
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Q.
A gas
X
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L at S.T.P. The gas turns acidified
K
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