Question

Al2 (So4)3 -----heat ------Al2O3 + So3 ​

Answer 1

Explanation:

Al2(SO4)3 (aq) → 3 SO3 (l) + Al2O3 (s)

This is a precipitation reaction: Al2O3 is the formed precipitate.

Reactants:

Al2(SO4)3 – Aluminium sulfate source: wikipedia, accessed: 2019-09-27source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-02

Other names: Aluminum sulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Aluminium sulphate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Cake alum source: wikipedia, accessed: 2019-09-27

Appearance: White crystalline solid | hygroscopic source: wikipedia, accessed: 2019-09-27; Odourless white hygroscopic lustrous crystals or powder source: ICSC, accessed: 2019-09-04

Products:

SO3 – Sulfur trioxide source: wikipedia, accessed: 2019-09-28source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Sulfonylideneoxidane source: wikipedia, accessed: 2019-09-28

Other names: Sulfuric anhydride source: wikipedia, accessed: 2019-09-28, Sulfur(VI) oxide source: wikipedia, accessed: 2019-09-28, SO3 source: wikidata, accessed: 2019-09-02

Appearance: Colorless to white crystalline solid which will fume in air.{{ source: wikipedia, accessed: 2019-09-28; Fuming hygroscopic colourless liquid or colourless-to-white crystals source: ICSC, accessed: 2019-09-04

Al2O3

Names: Aluminium oxide (Aluminum oxide) source: wikipedia, accessed: 2019-09-27, Aluminum oxide source: wikidata, accessed: 2019-09-02, Aluminium oxide source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-02

Appearance: White solid source: wikipedia, accessed: 2019-09-27; White powder source: ICSC, accessed: 2019-09-04; White, odorless, crystalline powder. source: NIOSH NPG, accessed: 2019-09-02

Search by reactants (Al2(SO4)3)

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1 Al2(SO4)3 + Ba(NO3)2 → Al(NO3)3 + Ba(SO4)

2 Ca(OH)2 + Al2(SO4)3 → Al(OH)3 + CaSO4

3 NaOH + Al2(SO4)3 → Na2SO4 + Al(OH)3

4 Al2(SO4)3 + BaCl2 → AlCl3 + BaSO4

5 Al2(SO4)3 + Ba(NO3)2 → BaSO4 + Al(NO3)3

6 KOH + Al2(SO4)3 → K2SO4 + Al(OH)3

7 H2O + NH3 + Al2(SO4)3 → Al(OH)3 + (NH4)2SO4

8 Cu + Al2(SO4)3 → Al + CuSO4

9 Al2(SO4)3 + Na(OH) → Al(OH)3 + Na2(SO4)

10 K2SO4 + Al2(SO4)3 → KAl(SO4)2

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Search by products (SO3, Al2O3)

1 Al2(SO4)3 → Al2O3 + SO3

2 O2 + Al2S3 → Al2O3 + SO3

3 O2 + AlS3 → Al2O3 + SO3

Search by reactants (Al2(SO4)3) and by products (SO3, Al2O3)

1 Al2(SO4)3 → Al2O3 + SO3

Answer 2

Answer:

$Al_2(So_4)_3\rightarrow(heat)\:Al_2o_3 + 3So_3$

Explanation:

• This is a thermal decomposition reaction.

Thermal decomposition is a chemical reaction that happens when a compound breaks down when heated. Thermal decomposition reactions happen at high temperatures. The reactants absorb lots of energy before breaking down into the products . The starting compound is the reactant.

It is found that Al2(SO4)3·18H2O decomposes to Al2O3 in four major stages, all of endothermic. Some of these major stages are formed by sub-stages. The first three major stages are dehydration reactions in which two, ten and six moles water are lost, respectively. The last major stage is sulfate decomposition.