When arranging chemical equations, please follow the following formatting guidel

Question

When arranging chemical equations, please follow the following formatting guidelines. Add phases to all chemical reactions unless asked otherwise. When adding phases, make sure not to place them as a subscript. Do not stack charges and subscripts. To add a charge to an ion with a subscript, first enter the subscript. For example, to type SO_4^2- start by typing SO_4. Then use the arrow key to arrow over before adding a superscript with the charge. If You make a formatting error, you will see an message such as "Check your placement of subscripts and superscripts." or There is an error in your submission. Make sure you have formatted it properly. "You will not lose any credit, but the answer will need to be edited and re-substituted. Part A What is the net ionic equation of the reaction of FeCI_2 with NaOH? Part B What is the net ionic equation of the reaction of MgSO_4 with Pb(NO_3)_2?

Explanation / Answer

A)

net ionic equation includes only ions reacting, so:

FeCl2(aq) + NaOH(aq) :

first, use molecular equation, which includes all mlecules and forms any solids/aquoeus solutions

FeCl2(aq) + NaOH(aq) --> Fe(OH)2(s) + NaCl(aq)

balance

FeCl2(aq) + 2NaOH(aq) --> Fe(OH)2(s) + 2NaCl(aq)

ionic equation

Fe+2(aq) + 2Cl-(aq) + 2Na+(aq) + 2OH-(aq) --> Fe(OH)2(s) + 2Na+(aq) + 2Cl-(aq)

net ionic (cancel spectator ions)

Fe+2(aq)  + 2OH-(aq) --> Fe(OH)2(s)

B)

Mg, SO4, PB and NO3 --> PbSO4 will be formed ( solubility rules)

molecular:

MgSO4(aq) + Pb(NO3)2(aq) --> PbSO4(s) + Mg(NO3)2(aq)

ionic:

Mg+2(aq) + SO4-2(aq) + Pb+2(aq) + 2NO3-2(aq) --> PbSO4(s) + Mg+2(aq) +  2NO3-2(aq)

net ininc ( get rid of spectator ions)

SO4-2(aq) + Pb+2(aq) --> PbSO4(s)

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