Question

question 26 of 37
balance the following chemical equation (if necessary):
$\ce{mno_{2}(s) + hcl(aq) -> mncl_{2}(aq) + h_{2}o(l) + cl_{2}(g)}$

Explanation:

Step1: Balance oxygen atoms

There are 2 oxygen atoms in \(MnO_2\). In \(H_2O\), to balance oxygen, we need 2 \(H_2O\) molecules.

Step2: Balance hydrogen atoms

Since we have 2 \(H_2O\) (4 hydrogen atoms), we need 4 \(HCl\) molecules.

Step3: Balance chlorine atoms

We have 4 \(Cl\) from \(HCl\). In \(MnCl_2\) there are 2 \(Cl\) and in \(Cl_2\) there are 2 \(Cl\) (total 4 \(Cl\)).

Answer:

\(MnO_2(s)+4HCl(aq)
ightarrow MnCl_2(aq)+2H_2O(l)+Cl_2(g)\)