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Question

Question: The reaction of water with sodium and potassium is....

The reaction of water with sodium and potassium is.

A

Exothermic

B

Endothermic

C

Reversible

D

Irreversible and endothermic

Answer

Exothermic

Explanation

Solution

2Na+2HOH2NaOH+H22Na + 2HOH \rightarrow 2NaOH + H_{2} \uparrow

2K+2HOH2KOH+H22K + 2HOH \rightarrow 2KOH + H_{2} \uparrow