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Which of the following reaction produces...

Which of the following reaction produces hydrogen ?

A

`Mg+H_(2)O`

B

`H_(2)S_(4)O_(8)+H_(2)O `

C

`BaO_(2)+HCl `

D

`Na_(2)O_(2) + 2HCl `

Text Solution

Verified by Experts

The correct Answer is:
A
Alkali and alkaline earth metals react with water to produce hydrogen gas and metal hydroxide . This is due to their high electropositive character .
` 2Na+2H_(2)O to 2NaOH+H_(2)`
`Mg+2H_(2)O to Mg(OH)_(2)+H_(2)`
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