When a Certain Acid and a Certain Base Are Mixed

When a certain acid and a certain base are mixed together, a reaction occurs that produces a gas as one of the products. The gas has a density of 2.62 g/L at 1.00 atm and 25°C. What is the molar mass and identity of the gas?

A) H₂, 2 g/mol
B) CO, 28 g/mol
C) O₂, 32 g/mol
D) CO₂, 44 g/mol
E) SO₂, 64 g/mol