Question

Decide whether a chemical reaction happens in either of the following situations. If a reaction does happen, write the chemical equation for it. Be sure your chemical equation is balanced and has physical state symbols. situation chemical reaction? chemical equation A strip of solid lead metal is put into a beaker of 0.043M Fe(NO3)2 solution. yes no A strip of solid iron metal is put into a beaker of 0.044M Pb(NO3)2 solution.

Answer 1

Answer: The chemical equations are given below.

Explanation:

A balanced chemical reaction follows law of conservation of mass.

This law states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form. This also means that total number of individual atoms on reactant side must be equal to the total number of individual atoms on the product side.  

Single displacement reaction is defined as the reaction in which more reactive metal displaces a less reactive metal from its chemical reaction.

General equation representing single displacement reaction follows:

$AB+C\rightarrow CB+A$

C is more reactive element than element A.

The reactivity of metals is judged by the series known as reactivity series. Elements lying above in the series are more reactive than the elements lying below in the series.

• 1. When solid lead metal is put in the beaker of 0.043 M $Fe(NO_3)_2$ solution.

Lead lies below in the reactivity series than iron. Thus, it will not replace iron from its chemical reaction.

$Pb(s)+Fe(NO_3)_2(aq.)\rightarrow \text{No reaction}$

• 2. When solid iron metal is put in the beaker of 0.044 M $Pb(NO_3)_2$ solution.

Iron lies above in the reactivity series than lead. Thus, it will easily replace lead from its chemical reaction.

$Fe(s)+Pb(NO_3)_2(aq.)\rightarrow Fe(NO_3)_2(aq.)+Pb(s)$

Hence, the chemical equations are given above.