State your observations (without chemical reactions): (i) sodium hydroxide added to lead nitrate solution (ii) ammonium hydroxide added to copper sulphate solution (iii) caustic soda added to ferrous salt

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Solution

Dear Student

This question is related to some practical observations which can be confirmed only in a lab. However, the possible outcomes are:
1. Lead oxide (white) ppt and Sodium nitrate (aq) are formed.
2. Cupra ammonium complex (Dark blue) solution is formed.
3. It may turn ferrous to ferric, but depends on salt and amount of NaOH.

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Distinguish by adding : Sodium hydroxide solution and ammonium hydroxide solution to
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(c) Copper salt solution and ferrous salt solution.
(d) Fe(II) salt solution and Fe(III) salt solution.
(e) Ferrous nitrate and lead nitrate

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(iii) Lead nitrate and sodium chloride are mixed.
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(v) Sulphur burns.

Q. State your observations when ammonium hydroxide solution is added drop by drop and then in excess to each of the following solutions :
(i) copper sulphate solution.
(ii) zinc sulphate solution.

Q. State what do you observe when:- Ammonium hydroxide is added to iron

[I I I]

sulphate solution.

Q. State two relevant observations for the reaction : Ammonium hydroxide solution is added to copper (II) nitrate solution in small quantities and then in excess.

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