Consider the following system composed of five 1 M aqueous solutions; iron (II)
ID: 912664 • Letter: C
Question
Consider the following system composed of five 1 M aqueous solutions; iron (II) chloride, sodium sulfite, sulfuric acid, silver nitrate, and sodium hydroxide.
Yoou will mix the solutions in a pair wise fashion so that all possible reactions between the solutions are tested. Use the solubility rules to predict when the precipitation reaction will occur. For each combination that produces a precipitation reaction write a balanced molecular equation and a net ionic equation. Indicate all phases in your equations.
The combination of sodium sulfite and sulfuric acid does not produce a precipitate but does produce a foul smelling gas, sulfur dioxide, and molecular water. Write a balanced molecular equation and a net ionic equation for the reaction. Indicate all phases in your equations.
One combination of chemical above does not produce a precipitate or a gas but you notice the test tube warms up significantly upon mixing. This is due to the high heat of neutralization. Identify the pair that produces a neutralization reaction and write a balanced molecular equation and a net ionic equation. Indicate all phases in your equations.
Explanation / Answer
FeCl2(aq) + 2AgNO3(aq0 ----> Fe(NO3)2(aq0 +2 AgCl(s)
ionic equation
Fe+2(aq)+2Cl-(aq) + 2Ag+(aq)+2NO3-(aq) ----> Fe+2(aq)+2(NO3)-(aq)+2 AgCl(s)
removal of spectetor ions
net ionic equation
2Ag+(aq)+2Cl-(aq)----> 2AgCl(s)
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)
removal of spectetor ions
Fe+2(aq) + 2(OH)-(aq)----> Fe(OH)2(s) net ionic equation
2AgNO3(aq) + H2SO4(aq)---> Ag2SO4(s) + 2HNO3(aq)
ionic equation
2Ag+(aq)+2NO3-(aq) + 2H+(aq)+SO42-(aq)---> Ag2SO4(s) + 2H+(aq)+2NO3-(aq)
net ioni equation
2Ag+(aq) + So42-(aq) ----> Ag2SO4(s)
neutralisation reaction
H2SO4(aq) + 2NaOH(aq)---> Na2So4(aq)+ 2H2O(l)
Ionic equation
2H+(aq)+ SO42-(aq) + 2Na+(aq) + 2OH-(aq)----> 2Na+(aq) + SO42-(aq) + 2H2O(l)
removla of spectetor ions
2H+(aq) + 2OH-(aq)---> 2H2O(l)
FeCL2(aq) + Na2So3--->Fe(sO3)(s) + 2NaCl(aq)
ionic equation
Fe+2(aq)+2Cl-(aq) + 2Na+(aq)+So32-(aq)--->Fe(sO3)(s) + 2Na+(aq)+2Cl-(aq)
net ionic equation
Fe+2(aq) + SO32-(aq)--->FeSo3(s)
2AgNO3(aq) + Na2SO3(aq)--->Ag2SO3(s) + 2NaNO3(aq)
ionic equation
2Ag+(aq)+2NO3-(aq) + 2Na+(aq)+SO32-(aq)--->Ag2SO3(s) + 2Na+(aq)+2NO3-(aq)
net ionic equation
2Ag+(aq)+ So32-(aq)---->Ag2so3(s)
AgNO3(aq) + NaOH(aq)-----> AgOH(s)+ NaNO3(aq)
ionic equation
Ag+(aq)+NO3_(aq) + Na+(aq)+OH-(aq)-----> AgOH(s)+ Na+(aq)+NO3-(aq)
net ionic equation
Ag+(aq) + OH-(aq) -----> Ag(OH)(s)