Question
Wed October 17, 2012 By: V H Anahat Srihari
 

Name: (a)a metal that evolves a gas which burns with a pop sound when boiled with alkail. solution. (b) two bases which are not alkalis but dissolve in strong alkalis.

Expert Reply
Wed October 17, 2012
a) Zinc
 
b) Copper oxide is a base because it will react with acids and neutralise them, but it is not an alkali because it does not dissolve in water.
Sodium hydroxide is a base because it will react with acids and neutralise them. It's also an alkali because it dissolves in water.
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