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What is the formula equation for the reaction between sulfuric acid and dissolved sodium hydroxide if all products and reactants are in the aqueous or liquid phase?

A. [tex]\[HCl (aq) + NaOH (aq) \rightarrow NaCl (s) + H_2O (l)\][/tex]

B. [tex]\[H_2SO_4 (aq) + Ca(OH)_2 (aq) \rightarrow CaSO_4 (aq) + 2H_2O (l)\][/tex]

C. [tex]\[H_2SO_4 (aq) + 2NaOH (aq) \rightarrow Na_2SO_4 (aq) + 2H_2O (l)\][/tex]

D. [tex]\[2H_3PO_4 (aq) + 3Ca(OH)_2 (aq) \rightarrow Ca_3(PO_4)_2 (s) + 6H_2O (l)\][/tex]



Answer :

GinnyAnswer
To determine the correct chemical equation for the reaction between sulfuric acid (H₂SO₄) and sodium hydroxide (NaOH), where all reactants and products are in the aqueous (aq) or liquid (l) phase, we need to examine the given equations and identify the one that aligns with the reactants and the phase requirement.

Let's analyze each option:

1. \( HCl (aq) + NaOH (aq) \rightarrow NaCl (s) + H₂O (l) \)
- This equation involves hydrochloric acid (HCl) and not sulfuric acid (H₂SO₄), so it's not the correct reaction.

2. \( H₂SO₄ (aq) + Ca(OH)₂ (aq) \rightarrow CaSO₄ (aq) + 2 H₂O (l) \)
- This equation involves calcium hydroxide (Ca(OH)₂) instead of sodium hydroxide (NaOH), so it's not the correct reaction.

3. \( H₂SO₄ (aq) + 2 NaOH (aq) \rightarrow Na₂SO₄ (aq) + 2 H₂O (l) \)
- This equation involves sulfuric acid (H₂SO₄) and sodium hydroxide (NaOH), and all the reactants and products are in the aqueous or liquid phases. This matches the criteria given.

4. \( 2 H₃PO₄ (aq) + 3 Ca(OH)₂ (aq) \rightarrow Ca₃(PO₄)₂ (s) + 6 H₂O (l) \)
- This equation involves phosphoric acid (H₃PO₄) and calcium hydroxide (Ca(OH)₂), so it's not the correct reaction.

Therefore, the correct formula equation for the reaction between sulfuric acid and dissolved sodium hydroxide, with all products and reactants in the aqueous or liquid phase, is:

[tex]\[ H₂SO₄ (aq) + 2 NaOH (aq) \rightarrow Na₂SO₄ (aq) + 2 H₂O (l) \][/tex]

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