Question

The oxide of element Z was added to an alkali. It reacted to form salt and water. What is the pH(greater than 7 or lower than 7) of the alkali before the reaction and what type of element is Z(metal or non-metal)?

Answer 1

Answer: 49/x×z

Explanation:

X( 7×7)+Z

Answer 2

Answer:

Let the alkali be NaOH

The oxide of element Z is acidic in nature as only non-metallic oxides react with alkalis.

ÑaOH + Z ------》NaHZO3

The obtained salt is basic as the metallic salts are basic in nature.

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Explanation: