Metal + acid – metal salt + H2
2Na + H2Co3 – Na2Co3 + H2
When a base combine with metal it forms metal salt / base and release hydrogen gas
Base + metal – base/metals/salt + H2
2NaoH + Zn – Na2ZnO3 + H2 (sodium Zincates)
Base reacts only with zinc and aluminum
Examples of Acid reacts with metals:
1.HCL + Zn=ZnCl +H2.
2.HCL + Ca = CaCl2 +H2.
3.H2SO4 + Zn = ZnSO4 + H2.
4.HNO3 + Ca = CaNO3+H2.
5.HCL + Mg= MgCl +H2.
2NaOH + Zn ⇨ Na2ZnO2 + H2
2NaOH + 2Al + 2H2O ⇨ 2NaAlO2 + 2H2
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