Organic Chemistry Some Basic Principles And Techniques
- Organic Chemistry Some Basic Principles And Techniques Ques 1
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- Organic Chemistry Some Basic Principles And Techniques Ques 4
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- Organic Chemistry Some Basic Principles And Techniques Ques 7
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- Organic Chemistry Some Basic Principles And Techniques Ques 9
- Organic Chemistry Some Basic Principles And Techniques Ques 10
- Organic Chemistry Some Basic Principles And Techniques Ques 11
- Organic Chemistry Some Basic Principles And Techniques Ques 12
- Organic Chemistry Some Basic Principles And Techniques Ques 13
- Organic Chemistry Some Basic Principles And Techniques Ques 14
- Organic Chemistry Some Basic Principles And Techniques Ques 15
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- Organic Chemistry Some Basic Principles And Techniques Ques 17
- Organic Chemistry Some Basic Principles And Techniques Ques 18
- Organic Chemistry Some Basic Principles And Techniques Ques 19
- Organic Chemistry Some Basic Principles And Techniques Ques 20
- Organic Chemistry Some Basic Principles And Techniques Ques 21
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- Organic Chemistry Some Basic Principles And Techniques Ques 23
- Organic Chemistry Some Basic Principles And Techniques Ques 24
- Organic Chemistry Some Basic Principles And Techniques Ques 25
- Organic Chemistry Some Basic Principles And Techniques Ques 26
- Organic Chemistry Some Basic Principles And Techniques Ques 27
- Organic Chemistry Some Basic Principles And Techniques Ques 28
- Organic Chemistry Some Basic Principles And Techniques Ques 29
- Organic Chemistry Some Basic Principles And Techniques Ques 30
- Organic Chemistry Some Basic Principles And Techniques Ques 31
- Organic Chemistry Some Basic Principles And Techniques Ques 32
- Organic Chemistry Some Basic Principles And Techniques Ques 33
- Organic Chemistry Some Basic Principles And Techniques Ques 34
- Organic Chemistry Some Basic Principles And Techniques Ques 35
- Organic Chemistry Some Basic Principles And Techniques Ques 36
- Organic Chemistry Some Basic Principles And Techniques Ques 37
- Organic Chemistry Some Basic Principles And Techniques Ques 38
- Organic Chemistry Some Basic Principles And Techniques Ques 39
- Organic Chemistry Some Basic Principles And Techniques Ques 40
- Organic Chemistry Some Basic Principles And Techniques Ques 41
- Organic Chemistry Some Basic Principles And Techniques Ques 42
- Organic Chemistry Some Basic Principles And Techniques Ques 43
- Organic Chemistry Some Basic Principles And Techniques Ques 44
- Organic Chemistry Some Basic Principles And Techniques Ques 45
- Organic Chemistry Some Basic Principles And Techniques Ques 46
- Organic Chemistry Some Basic Principles And Techniques Ques 47
- Organic Chemistry Some Basic Principles And Techniques Ques 48
- Organic Chemistry Some Basic Principles And Techniques Ques 49
- Organic Chemistry Some Basic Principles And Techniques Ques 50
- Organic Chemistry Some Basic Principles And Techniques Ques 51
- Organic Chemistry Some Basic Principles And Techniques Ques 52
- Organic Chemistry Some Basic Principles And Techniques Ques 53
- Organic Chemistry Some Basic Principles And Techniques Ques 54
- Organic Chemistry Some Basic Principles And Techniques Ques 55
- Organic Chemistry Some Basic Principles And Techniques Ques 56
- Organic Chemistry Some Basic Principles And Techniques Ques 57
- Organic Chemistry Some Basic Principles And Techniques Ques 58
- Organic Chemistry Some Basic Principles And Techniques Ques 59
- Organic Chemistry Some Basic Principles And Techniques Ques 60
- Organic Chemistry Some Basic Principles And Techniques Ques 61
- Organic Chemistry Some Basic Principles And Techniques Ques 62
- Organic Chemistry Some Basic Principles And Techniques Ques 63
- Organic Chemistry Some Basic Principles And Techniques Ques 64
- Organic Chemistry Some Basic Principles And Techniques Ques 65
- Organic Chemistry Some Basic Principles And Techniques Ques 66
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- Organic Chemistry Some Basic Principles And Techniques Ques 71
Organic Chemistry Some Basic Principles And Techniques Ques 54
54. The Lassaigne’s extract is boiled with conc. $HNO_3$ while testing for halogens. By doing so it
[2011]
(a) decomposes $Na_2 S$ and $NaCN$, if formed.
(b) helps in the precipitation of $AgCl$.
(c) increases the solubility product of $AgCl$.
(d) increases the concentration of $NO_3{ }^{-}$ions.
Show Answer
Answer:
Correct Answer: 54.(a)
Solution:
- (a) Conc. $HNO_3$ decomposes $NaCN$ and $Na_2 S$ to avoid their interference.
$ \begin{aligned} & NaCN+HNO_3 \longrightarrow NaNO_3+HCN \uparrow \\ & Na_2 S+2 HNO_3 \longrightarrow 2 NaNO_3+H_2 S \uparrow \end{aligned} $
BETA
