What reaction yields hydrogen gas from magnesium metal and water?

1 Answer
May 14, 2017

Answer:

A redox reaction..........

Explanation:

The metal is oxidized to #Mg^(2+)#:

#Mg(s) rarr Mg^(2+) + 2e^(-)#

Steam is reduced to dihydrogen gas:

#H_2O + 2e^(-) rarr O^(2-) + H_2(g)#

Adds them together:

#Mg(s) + H_2O(g) rarr MgO(s) + H_2(g)#