Question

select all the correct answers.
which statements correctly match a chemical name with its formula? use the list of polyatomic ions and the periodic table to help you answer.
□ the chemical formula for ammonium carbonate is nh₄hco₃
□ the chemical formula for ammonium hypochlorite is nh₄clo
□ the chemical formula for ammonium nitrate is nh₄no₃
□ the chemical formula for ammonium phosphate is nh₄(po₄)₃
□ the chemical formula for ammonium sulfate is (nh₄)₂so₃

Explanation:

To solve this, we analyze each option by determining the correct formula for each ammonium compound using polyatomic ion charges (ammonium: \( \text{NH}_4^+ \)):

Option 1: Ammonium carbonate

Carbonate is \( \text{CO}_3^{2-} \). To balance charges: \( 2 \times \text{NH}_4^+ \) (total \( +2 \)) and \( 1 \times \text{CO}_3^{2-} \) (total \( -2 \)). Correct formula: \( (\text{NH}_4)_2\text{CO}_3 \). Given formula: \( \text{NH}_4\text{HCO}_3 \) (ammonium bicarbonate). Incorrect.

Option 2: Ammonium hypochlorite

Hypochlorite is \( \text{ClO}^- \). Ammonium is \( \text{NH}_4^+ \). Charges balance ( \( +1 \) and \( -1 \) ). Formula: \( \text{NH}_4\text{ClO} \). Correct.

Option 3: Ammonium nitrate

Nitrate is \( \text{NO}_3^- \). Ammonium is \( \text{NH}_4^+ \). Charges balance ( \( +1 \) and \( -1 \) ). Formula: \( \text{NH}_4\text{NO}_3 \). Correct.

Option 4: Ammonium phosphate

Phosphate is \( \text{PO}_4^{3-} \). To balance charges: \( 3 \times \text{NH}_4^+ \) (total \( +3 \)) and \( 1 \times \text{PO}_4^{3-} \) (total \( -3 \)). Formula: \( (\text{NH}_4)_3\text{PO}_4 \). Given formula: \( \text{NH}_4(\text{PO}_4)_3 \) (incorrect ratio). Incorrect.

Option 5: Ammonium sulfate

Sulfate is \( \text{SO}_4^{2-} \). To balance charges: \( 2 \times \text{NH}_4^+ \) (total \( +2 \)) and \( 1 \times \text{SO}_4^{2-} \) (total \( -2 \)). Formula: \( (\text{NH}_4)_2\text{SO}_4 \). Given formula: \( (\text{NH}_4)_2\text{SO}_3 \) (sulfite, not sulfate). Incorrect.

Answer:

B. The chemical formula for ammonium hypochlorite is \( \text{NH}_4\text{ClO} \)
C. The chemical formula for ammonium nitrate is \( \text{NH}_4\text{NO}_3 \)