Question

Zn+NaOH+H2O=Na2(Zn(OH)4)+H2

Answer 1

Zn + 2 NaOH + 2 H2O = Na2[Zn(OH)4] + H2

Answer 2

The balanced chemical equation for the reaction is:

Zn + 4 NaOH + 2 H2O → Na2Zn(OH)4 + 2 H2

This reaction involves the reaction of zinc (Zn) with sodium hydroxide (NaOH) and water (H2O) to form sodium tetrahydroxyzincate (Na2Zn(OH)4) and hydrogen gas (H2).

To balance the equation, we need to make sure that the number of atoms of each element is the same on both the reactant and product sides.

We have 1 zinc atom on the left and 1 on the right, so the number of zinc atoms is already balanced.

On the left side, we have 4 sodium atoms (4 NaOH), while on the right side we have 2 sodium atoms (2 Na2Zn(OH)4). To balance this, we need to multiply the sodium hydroxide by 2, so we have 8 sodium atoms on the left and 2 on the right.

On the left side, we have 2 oxygen atoms from the hydroxide ions and 2 from the water molecules, so a total of 4 oxygen atoms. On the right side, we have 8 oxygen atoms from the sodium tetrahydroxyzincate, so we need to multiply the water molecule by 4 to balance the oxygen atoms.

Finally, we balance the hydrogen atoms. On the left side, we have 8 hydrogen atoms from the hydroxide ions and 2 from the water molecules, so a total of 10 hydrogen atoms. On the right side, we have 8 hydrogen atoms from the sodium tetrahydroxyzincate and 2 from the hydrogen gas, so we have a total of 10 hydrogen atoms.

Thus, the balanced chemical equation is:

Zn + 4 NaOH + 2 H2O → Na2Zn(OH)4 + 2 H2