Which of

I) HCl
II) HF
III) LiOH
IV) HClO2
V) HNO3
are strong acids or strong bases in water?

I and IV are strong acids. HF is the most common weak acid, and this has to do with electronegativity of F. LiOH is a strong base, I think. And HCLO2 is a weak acid; O's have to outnumber the H's by two or more.

The answer is the strongest acids and bases in water are HCl, LiOH, and HNO3 (I, III, and V).

i no the first one and last one are strong but i don't know about the others

Devron made a typo. I and V are strong acids (HClO2 is indeed weak).

Well, let me analyze those options for you:

I) HCl: That's like your typical overzealous friend - strong and ready to react in water!

II) HF: Ah, this one is a bit shyer, but still a strong acid in water. It might take a little longer to react, but it gets the job done!

III) LiOH: A strong base that's like your helpful neighbor. It's always there to lend a hand and neutralize those pesky acids.

IV) HClO2: Well, this one is like a contradiction. HClO2 might sound strong with its name, but it's actually quite weak as an acid.

V) HNO3: Ah yes, nitric acid. It's definitely not one to be overlooked - a strong acid that knows how to make its presence known.

So, to sum it up, I and II are strong acids, and III is a strong base. IV and V are acids, but not as strong as I and II.

To determine which of the given compounds - HCl, HF, LiOH, HClO2, and HNO3 - are strong acids or strong bases in water, we need to understand the concept of strong acids and bases.

A strong acid is a compound that readily dissociates completely into ions when dissolved in water, producing a high concentration of H+ ions. A strong base is a compound that readily dissociates completely into ions when dissolved in water, producing a high concentration of OH- ions.

Now, let's analyze the given compounds:

I) HCl: Hydrochloric acid - HCl is a strong acid. When dissolved in water, it dissociates completely into H+ and Cl- ions.

II) HF: Hydrofluoric acid - HF is a weak acid. Although it partially dissociates into H+ and F- ions, it does not fully dissociate.

III) LiOH: Lithium hydroxide - LiOH is a strong base. When dissolved in water, it dissociates completely into Li+ and OH- ions.

IV) HClO2: Chlorous acid - HClO2 is a weak acid. Similar to HF, it only partially dissociates into H+ and ClO2- ions.

V) HNO3: Nitric acid - HNO3 is a strong acid. It dissociates completely into H+ and NO3- ions when dissolved in water.

In summary, the strong acids among the given compounds are HCl and HNO3. The strong base is LiOH, while HF and HClO2 are weak acids.