Given:

2so2 + o2 -> 2so3 + 44kcal
Which change increase the concentration of so4?
a. increasing temperature
b. increasing the concentration of o2
c. decreasing the pressure
d. decreasing the concentration of so2

2 answers

None of the answers are correct. There is no SO4^2- produced.
By the way, you use the caps key for correct sentence structure which I applaud; do the same for correct chemical formula structure. It makes a difference.
CO is carbon monoxide
Co is cobalt
co is the abbreviation for company
the answer is B increasing the concentration of o2