Question

question 72 (1 point)
the correct formulas for phosphoric acid and sulfuric acid are:

1. hp and hs
2. hpo₄ and hso₄
3. h₃po₄ and h₂so₄
4. h(po₄)₃ and h(so₄)₂

Explanation:

Step1: Recall acid formulas

Phosphoric acid is a common oxyacid with formula $H_3PO_4$ (contains H, P, O). Sulfuric acid is $H_2SO_4$ (contains H, S, O).

Step2: Evaluate options

• Option 1: HP, HS – incorrect (no O, wrong structure).
• Option 2: $HPO_4$, $HSO_4$ – missing H atoms (phosphoric needs 3 H, sulfuric 2).
• Option 3: $H_3PO_4$, $H_2SO_4$ – matches known formulas.
• Option 4: $H(PO_4)_3$, $H(SO_4)_2$ – incorrect structure (not how these acids are formed).

Answer:

1. $H_3PO_4$ and $H_2SO_4$