In Which Reaction Does the Oxidation Number of Oxygen Increase

question 67

Multiple Choice

In which reaction does the oxidation number of oxygen increase?

• A)Ba(NO₃)₂ (aq)+ K₂SO₄ (aq)→ BaSO₄ (s)+ 2KNO₃ (aq)
• B)HCl (aq)+ NaOH (aq)→ NaCl (aq)+ H₂O (l)
• C)MgO (s)+ H₂O (l)→ Mg(OH)₂ (s)
• D)2SO₂ (g)+ O₂ (g)→ 2SO₃ (g)
• E)2H₂O (l)→ 2H₂ (g)+ O₂ (g)

---

Definitions:

Community Organizations

Groups formed at the local level to promote and support the interests and welfare of the community.

Health Problems

Physical or mental conditions that impair a person’s normal functioning, requiring medical attention or treatment.

Motor Vehicle Crash

An incident involving a collision or accident of motor vehicles resulting in damage or injury.

Home Care

Health or supportive care provided in the patient's home by healthcare professionals or by family and friends.