Weak Acid Strong Acid?? (1 Viewer)

[purky]

We got a question from a sheet our teacher gave to us, and HI is acting as a strong acid, but in conquering chemistry it acts as a weak acid... what do i put in an exam??

 

[idling fire]

My sources say strong. Hydroiodic acid (which is what HI(aq) would refer to) is completely dissociated, for our purposes anyway.

 

[airie]

I've always thought HI is strong too

 

[kloudsurfer]

Yep, its strong.

 

[Miss-K-Lee-2007]

We got a question from a sheet our teacher gave to us, and HI is acting as a strong acid, but in conquering chemistry it acts as a weak acid... what do i put in an exam??

write a balanced equation to show HI acting as a strong acid. (im sure you can do this yourself)

 

[EHA18]

Hi there.
i thought there was only 3 strong acids and the rest weak. the strongs being H2SO4 (sulfuric acid), HNO3 (nitric acid) and HCI (hydrochloric acid)

 

[xiao1985]

Hi there.
i thought there was only 3 strong acids and the rest weak. the strongs being H2SO4 (sulfuric acid), HNO3 (nitric acid) and HCI (hydrochloric acid)

in HSC that's right, otherwise, it's not completely right

and HI is a strong acid...

 

[Martyno1]

I remember my teacher saying that all group 7 acids are strong except HF.

 

[kloudsurfer]

I remember my teacher saying that all group 7 acids are strong except HF.

Yeah my teacher said that too.

 

[Sam.]

HI is a strong acid.

You should be able to write out a balanced equation that proves that it totally ionises.

 

[Aerlinn]

I remember my teacher saying that all group 7 acids are strong except HF.

I've never heard that. You mean, as in, HBr, HI, HAt (no idea about that last one >.<) are all strong acids too?

PS. Speaking of acids/bases, it's strong acids that ionise completely... is it strong bases that dissociate completely into ions, or is that just a misconception?

 

[xiao1985]

I've never heard that. You mean, as in, HBr, HI, HAt (no idea about that last one >.<) are all strong acids too?

PS. Speaking of acids/bases, it's strong acids that ionise completely... is it strong bases that dissociate completely into ions, or is that just a misconception?

that's correct... acids ionises and most bases dissociates (nb: NaOH -> Na+ + OH-)

 

[haloeshorns]

HI is a strong acid.

You should be able to write out a balanced equation that proves that it totally ionises.

i should.... but i cant. this stuff confuses me. wots the equation i should be able to write?

 

[xiao1985]

what's the equation you write for HCl?

 

[***Gabs***]

Ok if we can say the common strong acids are HCL HNO3 and H2SO4 then what are the common strong bases?

 

[xiao1985]

everything which ended with metal-OH which dissolves...

 

[miz2nv]

need help 4 chem we hve 2 make a model showing
hydrochloric acid and acetic acid any help with how they will look

please help