Question

Test for Lead hydroxide​

Answer 1

Answer:

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Addition of aqueous NaOH solution to aqueous Pb2+ ion solution, will give an insoluble hydroxide which is a white precipitate. This white precipitate is Lead(II) hydroxide ( Pb(OH)2 ).

Answer 2

Answer:

Sodium hydroxide will turn damp red litmus paper blue. Test for hydroxide ions: ammonia (hydroxide ions form when it comes into contact with water) 1. Take 5 drops of 1.0 mol dm-3 ammonia solution and place on a filter paper and place inside a petri dish with lid. 2.