Guide
1
read carefully the conditions of the problem.If necessary, it can make more than once.

Write equation by which one can obtain the following transformation: Al → Al (NO3) 3 → Al2O3 → Al (OH) 3 → K [AL (OH) 4] → → AlCl3 Al (NO3) 3 → AlPO4.For each transformation make up the reactions.If the transition is not possible in a single step, make two or more reaction equations.
2
Write down the chain separately from the problem.You can number the number of responses and whether the substances for convenience.Remember that each successive substance is the starting point for the next.Determine which class of substances to treat every member of the chain.The first number is the metal aluminum.initial p
roduct of the reaction should be salt.The properties of the metal salt is obtained by reacting with an acid.In this case, with nitric acid.Consider whether it is possible this reaction.Make a chart of the equation, set up the coefficients.The first conversion is ready.Follow the step by step, gradually moving to the last matter, the aluminum phosphate.
3
Test yourself again.Nurse look at the equations of reactions, check whether all the coefficients are desired.Do not forget to properly arrange the reactions.In redox compose an electronic balance, make a short circuit for ionic reactions.
decision
1.Al + 6HNO3 (conc.) = & Gt;Al (NO3) 3 + 3NO2 + 3H2O

2.4Al (NO3) 3 = & gt;2AL2O3 + 12NO2 + 3O2

3.Al2O3 + 3H2SO4 = & gt;Al2 (SO4) 3 + 3H2O

Al2 (SO4) 3 + 6NaOH = & gt;2Al (OH) 3 + 3Na2SO4

4.Al (OH) 3 + KOH = & gt;K [Al (OH) 4]

5.K [Al (OH) 4] + 4HCl = & gt;KCl + AlCl3 + 4H2O

6.AlCl3 + 3AgNO3 = & gt;Al (NO3) 3 + 3AgCl

7.Al (NO3) 3 + K3PO4 = & gt;AlPO4 + 3KNO3