ICSE Class 10 Chemistry 2013 Solved Paper

State two relevant observations for each of the following :

Question : 49 of 84

Marks: +1, -0

Ammonium hydroxide solution is added to copper(II) nitrate solution in smail quantities and then in excess.

Solution:

(a) When

{\NH}_4 {\OH}

is added to copper (II) nitrate solution in small quantities then a pale blue ppt. is observed.
(b) When added in excess it disolves to give an inky blue solution forming a complex salt.

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