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Choose the Correct Answer from the Options Given Below : - Chemistry

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Question

Choose the correct answer from the options given below :
Which salt solution is soluble in excess of NH4OH

Options

  • Iron (II) salts

  • Iron (III) salts

  • Lead salts

  • Copper (II) salts

MCQ

Solution

Copper (II) salts solution is soluble in excess of NH4OH

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Action of Ammonium Hydroxide on Certain Salt Solutions
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Chapter 4: Analytical Chemistry - Exercise 2 [Page 86]

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Frank Chemistry - Part 2 [English] Class 10 ICSE
Chapter 4 Analytical Chemistry
Exercise 2 | Q 6.5 | Page 86

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The following table shows the tests a student performed on four different aqueous solutions which are X,Y,Z and W. Based on the observations provided, Identify the cation present

Chemical Test

Observation Conclusion
To Solution X, ammonium hydroxide is added in minium quantity first and then in excess A dirty white precipitate is formed which dissolves in excess to form a clear solution (i)
To Solution Y, ammonium hydroxide is added in minimum quantity first and then in excess A pale blue precipitate is formed which dissolves in excess to form a clear inky blue solution (ii)
To solution W, A small quantity of sodium hydroxide solution is added and then in excess A white precipitate is formed which remains insoluble (iii)
To a salt Z, calcium hydroxide solution is added and then heated A pungent smelling gas turning moist red litmus paper blue is obtained (iv)

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Ammonium hydroxide solution when added to Solution B gives a white precipitate which does not dissolve in excess of ammonium hydroxide solution.


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Copper sulphate solution with ammonium hydroxide solution.


Rita was given an unknown salt for identification. She prepared a solution of the salt and divided it into two parts.

  • To the first part of the salt solution, she added a few drops of ammonium hydroxide and obtained a reddish-brown precipitate.
  • To the second part of the salt solution, she added a few drops of silver nitrate solution and obtained a white precipitate.

Name:

  1. The cation present and
  2. The anion present in the salt given for identification.

A ______ coloured precipitate is formed when ammonium hydroxide is added to a solution of ferrous chloride.


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