Question

Al(NO3)3 + .....= Al (OH)3 Al (OH)3 + .....= Al2O3 Al2O3 + ... = Al

Answer 1

1. Al(NO3)3 + 3(NH3•H2O)(конц.,хол.) = Al(OH)3↓ + 3NH4NO3

в полной форме:

Al3+ + 3NO3 + 3NH3+ 3H2O = Al(OH)3↓ + 3NH4+ + 3NO3−

в краткой форме:

Al3+ + 3NO3 + 3NH3+ + 3H2O = Al(OH)3↓ + 3NH4+ + 3NO3−

2. 2Al(OH)3 = Al2O3 + 3H2O

3. (только если разложить другое вещество): 2Al(порошок) + N2 = 2AlN

Answer 2

To balance the chemical equations for the reactions you've provided, you need to determine the coefficients that will make the number of atoms of each element the same on both sides of the equation. Let's balance each equation one by one:

1. Al(NO3)3 + 3NaOH → Al(OH)3 + 3NaNO3 This equation is balanced. It has the same number of atoms of each element on both sides.

2. Al(OH)3 + Na2CO3 → Al2O3 + 3NaOH + CO2 To balance this equation, you can put a coefficient of 2 in front of Na2CO3: Al(OH)3 + 2Na2CO3 → Al2O3 + 6NaOH + 2CO2 Now, the equation is balanced.

3. Al2O3 + 2Na → 2NaAlO2 To balance this equation, you can put a coefficient of 2 in front of Na: Al2O3 + 4Na → 2NaAlO2 Now, the equation is balanced.

These balanced equations represent the reactions you provided.