1 molecule of hydrogen (H2) reacts with 1 molecule of chlorine (Cl2) to produce some amount of hydrogen chloride (HCl).

Question

Use the number of atoms in the products to answer the question below.
Chemical element Number of atoms in reactants Number of atoms in products
H 2 2
Cl 2 2
During this reaction, how many molecules of hydrogen chloride (HCl) are produced?

Answer 1

The reaction between hydrogen gas (H₂) and chlorine gas (Cl₂) can be represented by the balanced chemical equation:

\[ H_2 + Cl_2 \rightarrow 2 HCl \]

From the equation, we can see that 1 molecule of hydrogen (H₂) reacts with 1 molecule of chlorine (Cl₂) to produce 2 molecules of hydrogen chloride (HCl).

Therefore, during this reaction, 2 molecules of hydrogen chloride (HCl) are produced.