Question

Write the balanced molecular equation for each reaction and the net ionic equation?

a) Solutions of ammonium phosphate and lithium hydroxide are mixed
b) Solutions of aluminum and magnesium sulfide are mixed
c) A piece of aluminum is dropped into a solution of zinc nitrate

Answer 1

Answer on Question #56163 – Chemistry - Other

Question:

Write the balanced molecular equation for each reaction and the net ionic equation?

a) Solutions of ammonium phosphate and lithium hydroxide are mixed

b) Solutions of aluminum sulfide and magnesium are mixed

c) A piece of aluminum is dropped into a solution of zinc nitrate.

Answer:

a) $(\mathrm{NH}_4)_3\mathrm{PO}_4 + 3\mathrm{LiOH} = 3\mathrm{NH}_3 + 3\mathrm{H}_2\mathrm{O} + \mathrm{Li}_3\mathrm{PO}_4$

$$3 \mathrm{NH}_4^+ + \mathrm{PO}_4^{3-} + 3 \mathrm{Li}^+ + 3 \mathrm{OH}^- = 3 \mathrm{NH}_3^+ + 3 \mathrm{H}_2\mathrm{O} + 3 \mathrm{Li}^+ + \mathrm{PO}_4^{3-}$$

b) $\mathrm{Al}_{2}\mathrm{S}_{3} + 3\mathrm{Mg} = 3\mathrm{MgS} + 2\mathrm{Al}$

$$2 \mathrm{Al}^{3+} + 3 \mathrm{S}^{2-} + 3 \mathrm{Mg} = 3 \mathrm{Mg}^{2+} + \mathrm{S}^{2-} + 2 \mathrm{Al}$$

c) $2\mathrm{Al} + \mathrm{Zn}(\mathrm{NO}_3)_2 = 2\mathrm{AlNO}_3 + \mathrm{Zn}$

$$2 \mathrm{Al} + \mathrm{Zn}^{2+} + 2 \mathrm{NO}_3^- = 2 \mathrm{Al}^{3+} + 2 \mathrm{NO}_3^- + \mathrm{Zn}$$

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