Question

Magnesium reacts with steam to produce magnesium oxide and .

• A. hydrogen gas
• B. oxygen gas
• C. magnesium hydride

Answer 1

The correct option is A hydrogen gas

Metals react with water under different conditions and produce metal oxide or hydroxide and liberate hydrogen gas.

Magnesium is a moderately reactive metal and does not react with cold water. It reacts with steam and produces magnesium oxide and hydrogen gas.

$Mg\left(s\right)+H_{2}O\left(steam\right)\to MgO\left(s\right)+H_2\left(g\right)$