Question

Name two alkalies which can displace hydrogen.Give balanced equations for the same.Why are the metals you have considered to have unique nature?

Answer 1

the alkali are NaOH, KOH

Answer 2

The two alkali which can displace Hydrogen are NaOH and KOH.

Explanation:

• The reaction of double displacement are as follows:

           $NaOH + HCl \rightarrow NaCl + H_2O$

           $KOH + HCl \rightarrow KCl + H_2O$

• In the above two reactions, water is produced along with corresponding salt of the metal ion.

• Na and K are more reactive and hence can displace H from HCl, Because these are placed above Hydrogen in the Reactivity Series.

• These metals are unique because they not occur naturally and there is only one electron in the outer shell.

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