First slide

Hydrogen

Question

Which of the following reaction produces hydrogen ?

Very Easy

A

$H_{2} S_{4} O_{8} + H_{2} O$
B

BaO + HCl
C

$Mg + H_{2} O$
D

${Na}_{2} O_{2} + 2 HCl$

Solution

$Mg + 2 H_{2} O \overset{}{\to} Mg {(OH)}_{2} + H_{2} ↑$

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