Writing and Balancing Chemical Equations — Quiz

Question 5 • Chemistry

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?

Answer

HCl times aq plus NaOH times aq rightarrow NaCl times s plus cap h sub 2 cap o l

cap h sub 2 SO sub 4 aq plus 2 NaOH aq rightarrow Na sub 2 SO sub 4 aq plus 2 cap h sub 2 cap o l

cap h sub 2 SO sub 4 aq plus Ca OH sub 2 aq rightarrow CaSO sub 4 times aq plus 2 cap h sub 2 cap o l

2 cap h sub 3 PO sub 4 aq plus 3 Ca OH sub 2 aq rightarrow Ca sub 3 open paren PO sub 4 close paren s plus 6 cap h sub 2 cap o l

Explanation

Sulfuric acid is H₂SO₄ and sodium hydroxide is NaOH. Sulfuric acid has two acidic hydrogen ions, so it reacts with 2 NaOH to form sodium sulfate and 2 water molecules: H₂SO₄(aq) + 2 NaOH(aq) → Na₂SO₄(aq) + 2 H₂O(l). Choice B gives this balanced equation and the stated phases.

AI-written and checked against the verified answer.

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