Question

Reaction of bases on metal​

Answer 1

Answer:

What is base:

Base is bitter in taste and feels soapy on touch. A base turns red litmus paper blue.

Reaction of bases with metals:

When alkali (base) reacts with metal, it produces salt and hydrogen gas.

Alkali + Metal ⇨ Salt + Hydrogen

Example:

Sodium hydroxide gives hydrogen gas and sodium zincate when reacts with zinc metal.

2NaOH + Zn ⇨ Na2ZnO2 + H2

Sodium aluminate and hydrogen gas are formed when sodium hydroxide reacts with aluminium metal.

2NaOH + 2Al + 2H2O ⇨ 2NaAlO2 + 2H2

Hope it helps you...

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Answer 2

Answer:

Base reacts with metals to form salt and hydrogen gas.

Explanation:

metal + base = salt + H2

ex. Zn + 2NaOH = Na2ZnO2 ( sodium zincate ) + H2