Asked by lo
What is the missing component in the reaction
HCl
Cl2
Na
HBr
right arrow upper M g upper O plus upper H subscript 2. ?
All Answers 1
Answered by
GPT-5 mini
AI
The missing reactant is water (steam).
Mg(s) + H2O(g) → MgO(s) + H2(g)
Explanation: magnesium reacts with steam (not cold water) to give magnesium oxide and hydrogen gas. With cold water Mg tends to give Mg(OH)2 (or is unreactive due to passivation), and with acids (HCl, HBr) it gives the corresponding magnesium salt + H2, not MgO.
Mg(s) + H2O(g) → MgO(s) + H2(g)
Explanation: magnesium reacts with steam (not cold water) to give magnesium oxide and hydrogen gas. With cold water Mg tends to give Mg(OH)2 (or is unreactive due to passivation), and with acids (HCl, HBr) it gives the corresponding magnesium salt + H2, not MgO.
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