Given the three reactions shown below, pick the best answer.
I. K + O₂→KO₂
II. 2 K + 2 H₂O→2 KOH + H₂
III. 2 NaOH + H₂SO₄→Na₂SO₄ + 2 H₂O

Question

Given the three reactions shown below, pick the best answer. I. K + O₂→KO₂ II. 2 K + 2 H₂O→2 KOH + H₂ III. 2 NaOH + H₂SO₄→Na₂SO₄ + 2 H₂O

Quizplus · Accepted Answer

All three reactions are correctly balanced and represent plausible chemical reactions: I shows the formation of a compound from potassium and an element with a subscript notation, II represents a reaction between potassium and a hydrogen-containing compound to produce potassium hydroxide and another compound, and III depicts a reaction between sodium hydroxide and a sulfur-containing compound to produce another compound and water.

Given the Three Reactions Shown Below, Pick the Best Answer