a metal is burnt in oxygen to form an oxide dissolves in water and a few drops of a universal indicator added. what colour that does the indicator turn ?and tell why does it turn into that colour?
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a metal is burnt in oxygen to form an oxide dissolves in water and a few drops of a universal indicator added. what colour that does the indicator turn ?and tell why does it turn into that colour?
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Answer:
Litmus paper is used to test whether the given solution is acidic or alkaline in nature. Litmus paper is a natural indicator.
Explanation:
Indicators are red in acids and blue in bases. In other words, acids change blue litmus paper to red; bases change red litmus paper to blue. MgO, K
2
O and ZnO are basic oxides while CO
2
is the acidic oxide.
So, the given acidic oxide of carbon, i.e., carbon dioxide turns blue litmus red.