Question #0ac24

1 Answer
Nam D.
Jan 21, 2018

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)

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