Reactions in solution

Questions
When observed independently, which of the following are indications that a chemical reaction has occurred? Select all that apply.

  • Temperature change
  • Formation of a precipitate
  • Change in odor

Classify each compound as water soluble or water insoluble.
: Water soluble
: Water soluble
: Water soluble
: Water insoluble

Select the net ionic equation for the reaction that occurs when sodium hydroxide and nickel(II) nitrate are mixed.

  • K2SO4
  • AgNO3
  • FeCl3
  • Cu(OH)2
  • Ni2+(aq) + 2 OH−(aq) ⟶ Ni(OH)2(s)

Select the net ionic equation for the reaction that occurs when potassium iodide and lead(II) nitrate are mixed.
Select the net ionic equation for the reaction that occurs when sodium carbonate and calcium chloride are mixed.
Select the net ionic equation for the reaction that occurs when potassium acetate and silver nitrate are mixed.
Select the net ionic equation for the reaction that occurs when sodium carbonate and nitric acid are mixed.
Select the net ionic equation for the reaction that occurs when sodium hydroxide and nitric acid are mixed.
Select the net ionic equation for the reaction that occurs when sodium acetate and sulfuric acid are mixed.

For each pair of reactants, will there be a reaction?
: Reaction
: Reaction
: Reaction
: No reaction

Select the net ionic equation for the reaction that occurs when magnesium metal and sulfuric acid are mixed.
Select the net ionic equation for the reaction that occurs when aluminum metal and hydrochloric acid are mixed.
Pb2+(aq) + 2 I−(aq) ⟶ PbI2(s)
Ca2+(aq) + CO32−(aq) ⟶ CaCO3(s)

No reaction occurs
2 H+(aq) + CO32−(aq) ⟶ H2O(l) + CO2(g)
H+(aq) + OH−(aq) ⟶ H2O(l)

No reaction occurs
Zn(s) + HCl(aq)
Zn(s) + CuSO4(aq)
Mn(s) + Ni(NO3)2(aq)
Sn(s) + Mg(NO3)2(aq)
Mg(s) + 2 H+(aq) ⟶ Mg2+(aq) + H2(g)
2 Al(s) + 6 H+(aq) ⟶ 2 Al3+(aq) + 3 H2(g)