WAEC - Chemistry (2017 - No. 27)
Which of the following gases is not acidic?
\(SO_{3}\)
\(NO_{2}\)
\(Co_{2}\)
CO
הֶסבֵּר
The compound CO is treated as a neutral oxide, though in truth, it is slightly acidic. Regardless of this, within the options supplied, CO is the best option available.