How can I balance this chemical equations? Aluminum and hydrochloric acid react to form aluminum chloride and hydrogen gas.
1 Answer
Explanation:
This reaction is between a metal and an acid which typically results in a salt and the release of hydrogen gas. The unbalanced reaction is
Al + HCl -> H_2 + AlCl_3Al+HCl→H2+AlCl3 .
This is a redox reaction, whose half-reactions are and become:
2("Al"(s) -> "Al"^(3+)(aq) + cancel(3e^(-)))
3(2"H"^(+)(aq) + cancel(2e^(-)) -> "H"_2(g))
"-----------------------------------------------"
2"Al"(s) + 6"H"^(+)(aq) -> 3"H"_2(g) + 2"Al"^(3+)(aq)
Aluminum oxidizes as
If we add back the spectator
color(blue)(2"Al"(s) + 6"HCl"(aq) -> 3"H"_2(g) + 2"AlCl"_3(aq))
I hope this was helpful.