Question

rosa was looking for patterns to help predict the products of chemical reactions. she recorded three similar decomposition reactions in the table.

reactants	products
$2kclo_3$	$3o_2 + 2kcl$
$2liclo_3$

what products should she record in the last row of the table?

• $2licl + 3o_2$
• $3licl + 2o_2$
• $2lio + 3cl_2$
• $3lio + 2cl_2$

Explanation:

Step1: Identify Reaction Pattern

Observe the first two reactions: \(2\text{NaClO}_3
ightarrow 2\text{NaCl} + 3\text{O}_2\) and \(2\text{KClO}_3
ightarrow 2\text{KCl} + 3\text{O}_2\) (rearranged). The pattern is: \(2\text{MClO}_3
ightarrow 2\text{MCl} + 3\text{O}_2\), where \(M\) is \(Na\), \(K\), or \(Li\).

Step2: Apply Pattern to \(2\text{LiClO}_3\)

Using the pattern, substitute \(M = Li\). So, \(2\text{LiClO}_3\) should decompose into \(2\text{LiCl} + 3\text{O}_2\).

Answer:

\(2\text{LiCl} + 3\text{O}_2\) (corresponding to the first option: \(2\text{LiCl} + 3\text{O}_2\))