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24/12/2021 1:12 pm
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Which of the following reagents gives yellow precipitate for the following sequence
(i) NaOH (ii) dil. HNO3 (iii) AgNO3?
1 Answer
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24/12/2021 1:16 pm
Correct answer: (d)
Explanation:
Silver nitrate test is carried out to detect the type of halide ion in a given solution. The solution is first acidified by adding dilute HNO3 followed by silver nitrate solution.
F–, Cl–, Br– & I– react as given below.
Ag+ (aq) + F– (aq) → AgF (No precipitate as it is soluble.)
Ag+ (aq) + Cl– (aq) → AgCl(s) (white precipitate.)
Ag+ (aq) + Br– (aq) → AgBr(s) (pale cream precipitate.)
Ag+ (aq) + I– (aq) → AgI(s) (pale yellow precipitate.)
This post was modified 4 years ago by Reyana09