Question

1) Al(OH)3 + HNO3 = ? 2) Al(OH)3 + KOH =? 3) Al2O3 + NaOH =? 4) Al + H2SO4 = ?

Answer 1

1) Al(OH)3+3HNO3=Al(NO3)3+3H2O;
2) Al(OH)3+KOH=K[Al(OH)4]-----Возможно вы не так записываете
3) Al2O3+2NaOH=2NaAlO2 + H2O
4) 2Al+3H2SO4=Al2(SO4)3+3H2

Answer 2

1) Al(OH)3 + HNO3 = ?

The reaction between aluminum hydroxide (Al(OH)3) and nitric acid (HNO3) results in the formation of aluminum nitrate (Al(NO3)3) and water (H2O) [[1]](https://portal.tpu.ru/SHARED/l/LYAMINA/uchebnaya_rabota/Tab/ChemistryP1_0.pdf).

The balanced chemical equation for this reaction is:

2 Al(OH)3 + 3 HNO3 → Al(NO3)3 + 6 H2O

2) Al(OH)3 + KOH = ?

When aluminum hydroxide (Al(OH)3) reacts with potassium hydroxide (KOH), it forms potassium aluminate (KAl(OH)4) [[1]](https://portal.tpu.ru/SHARED/l/LYAMINA/uchebnaya_rabota/Tab/ChemistryP1_0.pdf).

The balanced chemical equation for this reaction is:

Al(OH)3 + KOH → KAl(OH)4

3) Al2O3 + NaOH = ?

The reaction between aluminum oxide (Al2O3) and sodium hydroxide (NaOH) produces sodium aluminate (NaAlO2).

The balanced chemical equation for this reaction is:

Al2O3 + 2 NaOH → 2 NaAlO2

4) Al + H2SO4 = ?

When aluminum (Al) reacts with sulfuric acid (H2SO4), it forms aluminum sulfate (Al2(SO4)3) and hydrogen gas (H2).

The balanced chemical equation for this reaction is:

2 Al + 3 H2SO4 → Al2(SO4)3 + 3 H2

Please note that the above reactions are simplified and may not take into account specific reaction conditions or stoichiometry.