Question

1. in the balanced equation

$x + cl_2 \to c_2h_5cl + hcl$

which molecule is represented by $x$?

Explanation:

Step1: Analyze the atoms on the product side

On the product side, there are 2 carbon atoms (\(C\)) in \(C_{2}H_{5}Cl\), 6 hydrogen atoms (\(H\)) (\(5\) in \(C_{2}H_{5}Cl\) and \(1\) in \(HCl\)), and \(2\) chlorine atoms (\(Cl\)) (\(1\) in \(C_{2}H_{5}Cl\) and \(1\) in \(HCl\)).

Step2: Analyze the atoms on the reactant side

On the reactant side, \(Cl_{2}\) provides \(2\) chlorine atoms. So, the unknown \(X\) should provide \(2\) carbon atoms and \(6\) hydrogen atoms.

Answer:

\(C_{2}H_{6}\)