Chemistry
The salt solution which does not react with ammonium hydroxide is:
- Calcium nitrate
- Zinc nitrate
- Lead nitrate
- Copper nitrate
Analytical Chemistry
ICSE 2018
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Answer
Calcium Nitrate
Reason — No ppt. occurs even with addition of excess of ammonium hydroxide as the concentration of OH- ions from the ionization of of NH4OH is so low that it cannot precipitate the hydroxide of calcium.
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Related Questions
The colour of the precipitate formed on adding NaOH solution to iron (II) sulphate solution is:
- White
- Brown
- Green
- Pale blue
A metal which produces hydrogen on reacting with alkali as well as with acid:
- Iron
- Magnesium
- Zinc
- Copper
Which of the following is the best reagent to distinguish lead nitrate and zinc nitrate ?
P NaOH solution
Q KOH solution
R NH4OH solution
Only P
Only R
Only Q
Both P and Q
Assertion (A): Calcium salt solution does not show any change even after adding an excess of ammonia solution to it.
Reason (R): The low concentration of hydroxide ion in ammonium hydroxide solution which are unable to precipitate the hydroxide ions of calcium
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.