Question

Question #0ac24

Answer 1

It should create hydrogen gas `(H_2)` and aluminium chloride `(AlCl_3)`.

Explanation:

A general word equation for metals reacting with acids is

`"metal" \ + \ "acid" -> "salt" + "hydrogen gas"`

Here, the acid is hydrogen chloride, and the metal is aluminium.

So, the equation will be

`Al(s)+HCl(aq)->AlCl_3(aq)+H_2(g)`

This creates aluminium chloride (the salt) and hydrogen gas.

Now, we can write the balanced equation. Let's find the lowest common multiple of the `3` chlorines and `2` hydrogens, which will be `6`. That means that there will be `6HCl`, `2AlCl_3`, and `3H_2`.

`Al(s)+6HCl(aq)->2AlCl_3(aq)+3H_2(g)`

Now, add a `2` in front of the first aluminium to create the whole balanced equation

`2Al(s)+6HCl(aq)->2AlCl_3(aq)+3H_2(g)`