Use the crossover technique to write formulas for the following compounds: Iron(

Question

Use the crossover technique to write formulas for the following compounds: Iron(III) hydroxide Lead(II) phosphate Zinc carbonate Ammonium nitrate Potassium hydrogen carbonate Potassium sulfite Write balanced chemical equations for each of the following unbalanced reactions: SO_2 + O_2 rightarrow SO_3 P + O_2 rightarrow P_2 O_5 Al + HC1 rightarrow A1C1_3 + H_2 NaOH + H_2SO_4 rightarrow Na_2SO_4 + H_2O Fe_2O_3 + CO rightarrow Fe + CO_2 Mg(OH)_2 + H_3PO_4 rightarrow Mg_3(PO_4)_2 + H_2O Identify the following as combination, decomposition, replacement, or ion exchange reactions: NaCl(aq) + AgNO_3(aq) rightarrow NaNO_3(aq) + AgCl downarrow H_2O(l) + CO_2(g) rightarrow H_2CO_3(s)+H_2O(g)+CO_2(g) 2 Na(s) + Cl_2(g) rightarrow 2 NaCl(s) Cu(s) + 2 AgNO_2(aq) rightarrow Cu(NO_3)_2(aq) + 2 Ag(s) CaO(s) + H_2O(l) rightarrow Ca(OH)_2(aq)

Explanation / Answer

5.

a) Iron (III) hydroxide : Fe(OH)3

b) Lead (II) phosphate : Pb3(PO4)2

c) Zinc carbonate : ZnCO3

d) Ammonium nitrate : NH4NO3

e) Potassium hydrogen carbonate : KHCO3

f) Potassium sulphite : K2SO3

8.

a) 2 SO2 + O2 --> 2 SO3

b) 4 P + 5 O2 --> 2 P2O5

c) 2 Al + 6 HCl --> 2 AlC3 + 3 H2

d) 2 NaOH + H2SO4 --> Na2SO4 + 2 H2O

e) Fe2O3 + 3 CO --> 2 Fe + 3 CO2

f) 3 Mg(OH)2 + 2 H3PO4 --> Mg3(PO4)2 + 6 H2O

9.

a) Ion exchange

b) Combination

c) Decomposition

d) Combination

e) Replacement

f) Combination

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