Classify each acid as strong or weak. Select the single best answer for each part.

Question

HIO2?

HCOOH?

HI?

Answer 1

Here’s the classification for each acid:

1. HIO2: Weak acid
2. HCOOH (formic acid): Weak acid
3. HI (hydroiodic acid): Strong acid

So the classifications are as follows:

• HIO2: Weak
• HCOOH: Weak
• HI: Strong