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The reaction of zinc (II) hydroxide with phosphoric acid produces zinc (II) phosphate and water.



Balance the reaction by completing the chemical equation with the molar coefficients.

Response area with 4 blank spaces

Blank space 1 empty
Blank space 2 empty
Blank space 3 empty
Blank space 4 empty
Answer options with 5 options.

1 answer

To balance the reaction of zinc (II) hydroxide with phosphoric acid, we will first write the unbalanced equation:

\[ \text{Zn(OH)}_2 + \text{H}_3\text{PO}_4 \rightarrow \text{Zn}_3\text{(PO}_4\text{)}_2 + \text{H}_2\text{O} \]

Now, to balance it out:

  1. Zinc (Zn) from zinc hydroxide and zinc phosphate must be balanced.
  2. Phosphate (PO₄) will appear as it needs to be balanced across both sides.
  3. Water will need to be balanced once the other components are balanced.

Ultimately, the balanced equation is:

\[ 3 \text{Zn(OH)}_2 + 2 \text{H}_3\text{PO}_4 \rightarrow \text{Zn}_3\text{(PO}_4\text{)}_2 + 6 \text{H}_2\text{O} \]

Thus, the coefficients are:

  • Blank space 1: 3
  • Blank space 2: 2
  • Blank space 3: 1
  • Blank space 4: 6

So, the completed response area is:

  • Blank space 1: 3
  • Blank space 2: 2
  • Blank space 3: 1
  • Blank space 4: 6

You would select the appropriate numbers from your provided answer options to complete the balance.