Question

Расставьте коофиценты Al + H2SO4 = H2 + Al2(SO4)3

Answer 1

2 Al+3 H2SO4=Al2(SO4)3+3 H2

Answer 2

To balance the chemical equation:

Al + H2SO4 = H2 + Al2(SO4)3

You need to make sure that the same number of atoms of each element are present on both sides of the equation. Let's balance it step by step:

1. Balance aluminum (Al) atoms: There are two aluminum atoms on the right side, so we need to put a coefficient of 2 in front of "Al" on the left side.

2 Al + H2SO4 = H2 + Al2(SO4)3

2. Balance hydrogen (H) atoms: There are 4 hydrogen atoms on the right side (2 from H2 and 2 from SO4), so we need to put a coefficient of 4 in front of "H2O" on the left side.

2 Al + 4 H2SO4 = H2 + Al2(SO4)3

3. Balance sulfur (S) atoms: There are 3 sulfur atoms on the right side (3 from Al2(SO4)3), so we need to put a coefficient of 3 in front of "H2SO4" on the left side.

2 Al + 3 H2SO4 = H2 + Al2(SO4)3

Now the equation is balanced with the coefficients:

2 Al + 3 H2SO4 = H2 + Al2(SO4)3