Question

unit 1, lc2 practice
balance the following chemical equation:
this is an example of a reaction.

Explanation:

Step1: Balance the equation

We start with the un - balanced equation \(Li+AlCl_3
ightarrow LiCl + Al\).
First, look at the number of \(Cl\) atoms. In \(AlCl_3\), there are 3 \(Cl\) atoms. In \(LiCl\), there is 1 \(Cl\) atom. To balance \(Cl\) atoms, we put a coefficient of 3 in front of \(LiCl\): \(Li+AlCl_3
ightarrow 3LiCl + Al\).
Now, for \(Li\) atoms: on the right - hand side, we have 3 \(Li\) atoms (from \(3LiCl\)). So we put a coefficient of 3 in front of \(Li\) on the left - hand side: \(3Li+AlCl_3
ightarrow 3LiCl + Al\).
Now, check the \(Al\) atoms: there is 1 \(Al\) atom on both sides.

Step2: Determine the reaction type

In the reaction \(3Li+AlCl_3 = 3LiCl+Al\), a single element (\(Li\)) replaces another element (\(Al\)) in a compound (\(AlCl_3\)). This is the characteristic of a single - replacement reaction. In a single - replacement reaction, the general form is \(A + BC=AC + B\) where \(A\) and \(B\) are elements.

Answer:

\(3Li+1AlCl_3 = 3LiCl+1Al\), single replacement reaction.